64638002 has 16 divisors (see below), whose sum is σ = 113908032. Its totient is φ = 27120720.

The previous prime is 64637977. The next prime is 64638031. The reversal of 64638002 is 20083646.

64638002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112718 + ... + 113289.

It is an arithmetic number, because the mean of its divisors is an integer number (7119252).

Almost surely, 2^64638002 is an apocalyptic number.

64638002 is a deficient number, since it is larger than the sum of its proper divisors (49270030).

64638002 is a wasteful number, since it uses less digits than its factorization.

64638002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226033.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64638002 is about 8039.7762406674. The cubic root of 64638002 is about 401.3247783950.

The spelling of 64638002 in words is "sixty-four million, six hundred thirty-eight thousand, two".