639048754 has 8 divisors (see below), whose sum is σ = 978968448. Its totient is φ = 312725940.

The previous prime is 639048731. The next prime is 639048763. The reversal of 639048754 is 457840936.

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

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 3 ways as a sum of consecutive naturals, for example, 3399102 + ... + 3399289.

It is an arithmetic number, because the mean of its divisors is an integer number (122371056).

Almost surely, 2^639048754 is an apocalyptic number.

639048754 is a deficient number, since it is larger than the sum of its proper divisors (339919694).

639048754 is a wasteful number, since it uses less digits than its factorization.

639048754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6798440.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 639048754 is about 25279.4136403517. The cubic root of 639048754 is about 861.3467065179.

The spelling of 639048754 in words is "six hundred thirty-nine million, forty-eight thousand, seven hundred fifty-four".