100639664 has 20 divisors (see below), whose sum is σ = 195147480. Its totient is φ = 50279040.

The previous prime is 100639661. The next prime is 100639681. The reversal of 100639664 is 466936001.

It is not an unprimeable number, because it can be changed into a prime (100639661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31919 + ... + 34929.

It is an arithmetic number, because the mean of its divisors is an integer number (9757374).

Almost surely, 2^100639664 is an apocalyptic number.

It is an amenable number.

100639664 is a deficient number, since it is larger than the sum of its proper divisors (94507816).

100639664 is a wasteful number, since it uses less digits than its factorization.

100639664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108 (or 5102 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 100639664 is about 10031.9322166769. The cubic root of 100639664 is about 465.1464663672.

The spelling of 100639664 in words is "one hundred million, six hundred thirty-nine thousand, six hundred sixty-four".