64646002 has 8 divisors (see below), whose sum is σ = 102673116. Its totient is φ = 30421632.

The previous prime is 64645979. The next prime is 64646027. The reversal of 64646002 is 20064646.

It can be written as a sum of positive squares in 2 ways, for example, as 54154881 + 10491121 = 7359^2 + 3239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950643 + ... + 950710.

Almost surely, 2^64646002 is an apocalyptic number.

64646002 is a deficient number, since it is larger than the sum of its proper divisors (38027114).

64646002 is a wasteful number, since it uses less digits than its factorization.

64646002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901372.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 64646002 is about 8040.2737515585. The cubic root of 64646002 is about 401.3413345265.

The spelling of 64646002 in words is "sixty-four million, six hundred forty-six thousand, two".