100665056 has 48 divisors (see below), whose sum is σ = 202704768. Its totient is φ = 49200000.

The previous prime is 100665013. The next prime is 100665079. The reversal of 100665056 is 650566001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400931 + ... + 401181.

It is an arithmetic number, because the mean of its divisors is an integer number (4223016).

Almost surely, 2^100665056 is an apocalyptic number.

100665056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100665056 is an abundant number, since it is smaller than the sum of its proper divisors (102039712).

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

100665056 is a wasteful number, since it uses less digits than its factorization.

100665056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 100665056 is about 10033.1976956502. The cubic root of 100665056 is about 465.1855828395.

The spelling of 100665056 in words is "one hundred million, six hundred sixty-five thousand, fifty-six".