102001664 has 22 divisors (see below), whose sum is σ = 203905764. Its totient is φ = 51000320.

The previous prime is 102001661. The next prime is 102001667. The reversal of 102001664 is 466100201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102001661) and next prime (102001667).

It is not an unprimeable number, because it can be changed into a prime (102001661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48782 + ... + 50829.

Almost surely, 2^102001664 is an apocalyptic number.

It is an amenable number.

102001664 is a deficient number, since it is larger than the sum of its proper divisors (101904100).

102001664 is an frugal number, since it uses more digits than its factorization.

102001664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99631 (or 99613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 102001664 is about 10099.5873183017. The cubic root of 102001664 is about 467.2354135913.

Adding to 102001664 its reverse (466100201), we get a palindrome (568101865).

The spelling of 102001664 in words is "one hundred two million, one thousand, six hundred sixty-four".