655679892 has 96 divisors (see below), whose sum is σ = 1879879680. Its totient is φ = 173681280.

The previous prime is 655679891. The next prime is 655679903. The reversal of 655679892 is 298976556.

It is a super-2 number, since 2×655679892² = 859832241546263328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655679891) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 70642 + ... + 79382.

It is an arithmetic number, because the mean of its divisors is an integer number (19582080).

Almost surely, 2^655679892 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 655679892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939939840).

655679892 is an abundant number, since it is smaller than the sum of its proper divisors (1224199788).

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

655679892 is a wasteful number, since it uses less digits than its factorization.

655679892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821 (or 8819 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The square root of 655679892 is about 25606.2471283865. The cubic root of 655679892 is about 868.7549425249.

The spelling of 655679892 in words is "six hundred fifty-five million, six hundred seventy-nine thousand, eight hundred ninety-two".