640332034 has 8 divisors (see below), whose sum is σ = 1011050640. Its totient is φ = 303315156.

The previous prime is 640331999. The next prime is 640332073. The reversal of 640332034 is 430233046.

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

It is a super-2 number, since 2×640332034² = 820050227533154312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8425384 + ... + 8425459.

It is an arithmetic number, because the mean of its divisors is an integer number (126381330).

Almost surely, 2^640332034 is an apocalyptic number.

640332034 is a deficient number, since it is larger than the sum of its proper divisors (370718606).

640332034 is a wasteful number, since it uses less digits than its factorization.

640332034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16850864.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 640332034 is about 25304.7828285484. The cubic root of 640332034 is about 861.9228805744.

The spelling of 640332034 in words is "six hundred forty million, three hundred thirty-two thousand, thirty-four".