761660244 has 72 divisors (see below), whose sum is σ = 2014838280. Its totient is φ = 242341632.

The previous prime is 761660233. The next prime is 761660267. The reversal of 761660244 is 442066167.

761660244 is a `hidden beast` number, since 7 + 6 + 1 + 6 + 602 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 324432144 + 437228100 = 18012^2 + 20910^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 761660199 and 761660208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65202 + ... + 75990.

It is an arithmetic number, because the mean of its divisors is an integer number (27983865).

Almost surely, 2^761660244 is an apocalyptic number.

761660244 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 761660244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007419140).

761660244 is an abundant number, since it is smaller than the sum of its proper divisors (1253178036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

761660244 is a wasteful number, since it uses less digits than its factorization.

761660244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889 (or 10884 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 761660244 is about 27598.1927669186. The cubic root of 761660244 is about 913.2445641018.

The spelling of 761660244 in words is "seven hundred sixty-one million, six hundred sixty thousand, two hundred forty-four".