640751010 has 16 divisors (see below), whose sum is σ = 1537802496. Its totient is φ = 170866928.

The previous prime is 640751009. The next prime is 640751099. The reversal of 640751010 is 10157046.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10679154 + ... + 10679213.

It is an arithmetic number, because the mean of its divisors is an integer number (96112656).

Almost surely, 2^640751010 is an apocalyptic number.

640751010 is an abundant number, since it is smaller than the sum of its proper divisors (897051486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640751010 is a wasteful number, since it uses less digits than its factorization.

640751010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21358377.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 640751010 is about 25313.0600678780. The cubic root of 640751010 is about 862.1108279973.

The spelling of 640751010 in words is "six hundred forty million, seven hundred fifty-one thousand, ten".