639464703 has 16 divisors (see below), whose sum is σ = 928444800. Its totient is φ = 389944800.

The previous prime is 639464689. The next prime is 639464711. The reversal of 639464703 is 307464936.

It is not a de Polignac number, because 639464703 - 2⁴ = 639464687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639464773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191773 + ... + 195078.

It is an arithmetic number, because the mean of its divisors is an integer number (58027800).

Almost surely, 2^639464703 is an apocalyptic number.

639464703 is a deficient number, since it is larger than the sum of its proper divisors (288980097).

639464703 is a wasteful number, since it uses less digits than its factorization.

639464703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386902.

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 639464703 is about 25287.6393322904. The cubic root of 639464703 is about 861.5335459907.

The spelling of 639464703 in words is "six hundred thirty-nine million, four hundred sixty-four thousand, seven hundred three".