55990768 has 40 divisors (see below), whose sum is σ = 112145600. Its totient is φ = 27060480.

The previous prime is 55990751. The next prime is 55990787. The reversal of 55990768 is 86709955.

It is a super-2 number, since 2×55990768² = 6269932202459648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160258 + ... + 160606.

It is an arithmetic number, because the mean of its divisors is an integer number (2803640).

Almost surely, 2^55990768 is an apocalyptic number.

It is an amenable number.

55990768 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

55990768 is a wasteful number, since it uses less digits than its factorization.

55990768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 55990768 is about 7482.6979091769. The cubic root of 55990768 is about 382.5652113744.

The spelling of 55990768 in words is "fifty-five million, nine hundred ninety thousand, seven hundred sixty-eight".