101644664 has 16 divisors (see below), whose sum is σ = 207909720. Its totient is φ = 46202080.

The previous prime is 101644663. The next prime is 101644679. The reversal of 101644664 is 466446101.

It is a self number, because there is not a number n which added to its sum of digits gives 101644664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101644663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577439 + ... + 577614.

Almost surely, 2^101644664 is an apocalyptic number.

It is an amenable number.

101644664 is an abundant number, since it is smaller than the sum of its proper divisors (106265056).

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

101644664 is a wasteful number, since it uses less digits than its factorization.

101644664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155070 (or 1155066 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 101644664 is about 10081.8978372130. The cubic root of 101644664 is about 466.6896773234.

The spelling of 101644664 in words is "one hundred one million, six hundred forty-four thousand, six hundred sixty-four".