611273880 has 192 divisors, whose sum is σ = 2292675840. Its totient is φ = 138352896.

The previous prime is 611273843. The next prime is 611273881. The reversal of 611273880 is 88372116.

611273880 is a `hidden beast` number, since 611 + 2 + 7 + 38 + 8 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611273881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268507 + ... + 270773.

It is an arithmetic number, because the mean of its divisors is an integer number (11941020).

Almost surely, 2^611273880 is an apocalyptic number.

611273880 is a gapful number since it is divisible by the number (60) 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 611273880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146337920).

611273880 is an abundant number, since it is smaller than the sum of its proper divisors (1681401960).

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

611273880 is a wasteful number, since it uses less digits than its factorization.

611273880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398 (or 2391 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 611273880 is about 24723.9535673403. The cubic root of 611273880 is about 848.6825635098.

The spelling of 611273880 in words is "six hundred eleven million, two hundred seventy-three thousand, eight hundred eighty".