102664404 has 18 divisors (see below), whose sum is σ = 259512890. Its totient is φ = 34221456.

The previous prime is 102664399. The next prime is 102664423. The reversal of 102664404 is 404466201.

102664404 is a `hidden beast` number, since 10 + 2 + 6 + 644 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100040004 + 2624400 = 10002^2 + 1620^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1425859 + ... + 1425930.

Almost surely, 2^102664404 is an apocalyptic number.

It is an amenable number.

102664404 is an abundant number, since it is smaller than the sum of its proper divisors (156848486).

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

102664404 is a wasteful number, since it uses less digits than its factorization.

102664404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851799 (or 2851794 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 102664404 is about 10132.3444473626. The cubic root of 102664404 is about 468.2451597393.

The spelling of 102664404 in words is "one hundred two million, six hundred sixty-four thousand, four hundred four".