640363050 has 48 divisors (see below), whose sum is σ = 1764559680. Its totient is φ = 170763120.

The previous prime is 640363039. The next prime is 640363067. The reversal of 640363050 is 50363046.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235822 + ... + 238521.

It is an arithmetic number, because the mean of its divisors is an integer number (36761660).

Almost surely, 2^640363050 is an apocalyptic number.

640363050 is an abundant number, since it is smaller than the sum of its proper divisors (1124196630).

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

640363050 is a wasteful number, since it uses less digits than its factorization.

640363050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474364 (or 474353 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 640363050 is about 25305.3956696986. The cubic root of 640363050 is about 861.9367967756.

The spelling of 640363050 in words is "six hundred forty million, three hundred sixty-three thousand, fifty".