639476002 has 8 divisors (see below), whose sum is σ = 1046415312. Its totient is φ = 290670900.

The previous prime is 639475981. The next prime is 639476003. The reversal of 639476002 is 200674936.

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

It is a super-3 number, since 3×639476002³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (639476003) 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, 14533524 + ... + 14533567.

It is an arithmetic number, because the mean of its divisors is an integer number (130801914).

Almost surely, 2^639476002 is an apocalyptic number.

639476002 is a deficient number, since it is larger than the sum of its proper divisors (406939310).

639476002 is a wasteful number, since it uses less digits than its factorization.

639476002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29067104.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 639476002 is about 25287.8627408486. The cubic root of 639476002 is about 861.5386202401.

The spelling of 639476002 in words is "six hundred thirty-nine million, four hundred seventy-six thousand, two".