761612220 has 60 divisors (see below), whose sum is σ = 2389210824. Its totient is φ = 203096160.

The previous prime is 761612191. The next prime is 761612221. The reversal of 761612220 is 22216167.

761612220 is a `hidden beast` number, since 7 + 616 + 1 + 22 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761612221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 233446 + ... + 236685.

Almost surely, 2^761612220 is an apocalyptic number.

It is an amenable number.

761612220 is an abundant number, since it is smaller than the sum of its proper divisors (1627598604).

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

761612220 is a wasteful number, since it uses less digits than its factorization.

761612220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470152 (or 470141 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 761612220 is about 27597.3226962327. The cubic root of 761612220 is about 913.2253698136.

Adding to 761612220 its reverse (22216167), we get a palindrome (783828387).

The spelling of 761612220 in words is "seven hundred sixty-one million, six hundred twelve thousand, two hundred twenty".