640114446 has 64 divisors (see below), whose sum is σ = 1376766720. Its totient is φ = 197821440.

The previous prime is 640114439. The next prime is 640114451. The reversal of 640114446 is 644411046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1182936 + ... + 1183476.

It is an arithmetic number, because the mean of its divisors is an integer number (21511980).

Almost surely, 2^640114446 is an apocalyptic number.

640114446 is an abundant number, since it is smaller than the sum of its proper divisors (736652274).

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

640114446 is a wasteful number, since it uses less digits than its factorization.

640114446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 640114446 is about 25300.4831179169. The cubic root of 640114446 is about 861.8252409579.

The spelling of 640114446 in words is "six hundred forty million, one hundred fourteen thousand, four hundred forty-six".