611872992 has 72 divisors (see below), whose sum is σ = 1748433960. Its totient is φ = 202970880.

The previous prime is 611872981. The next prime is 611872999. The reversal of 611872992 is 299278116.

611872992 is a `hidden beast` number, since 611 + 8 + 7 + 29 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611872999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55734 + ... + 65802.

It is an arithmetic number, because the mean of its divisors is an integer number (24283805).

Almost surely, 2^611872992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611872992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874216980).

611872992 is an abundant number, since it is smaller than the sum of its proper divisors (1136560968).

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

611872992 is a wasteful number, since it uses less digits than its factorization.

611872992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296 (or 10285 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 611872992 is about 24736.0666234549. The cubic root of 611872992 is about 848.9597387127.

The spelling of 611872992 in words is "six hundred eleven million, eight hundred seventy-two thousand, nine hundred ninety-two".