640524050 has 12 divisors (see below), whose sum is σ = 1191374826. Its totient is φ = 256209600.

The previous prime is 640524007. The next prime is 640524061. The reversal of 640524050 is 50425046.

640524050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 290123089 + 350400961 = 17033^2 + 18719^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6405191 + ... + 6405290.

Almost surely, 2^640524050 is an apocalyptic number.

640524050 is a deficient number, since it is larger than the sum of its proper divisors (550850776).

640524050 is a wasteful number, since it uses less digits than its factorization.

640524050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12810493 (or 12810488 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 640524050 is about 25308.5766095211. The cubic root of 640524050 is about 862.0090267374.

Adding to 640524050 its reverse (50425046), we get a palindrome (690949096).

The spelling of 640524050 in words is "six hundred forty million, five hundred twenty-four thousand, fifty".