641950936 has 16 divisors (see below), whose sum is σ = 1313081640. Its totient is φ = 291795840.

The previous prime is 641950909. The next prime is 641950943. The reversal of 641950936 is 639059146.

It is a junction number, because it is equal to n+sod(n) for n = 641950892 and 641950901.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3647361 + ... + 3647536.

Almost surely, 2^641950936 is an apocalyptic number.

It is an amenable number.

641950936 is an abundant number, since it is smaller than the sum of its proper divisors (671130704).

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

641950936 is a wasteful number, since it uses less digits than its factorization.

641950936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294914 (or 7294910 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 641950936 is about 25336.7506993300. The cubic root of 641950936 is about 862.6486469559.

The spelling of 641950936 in words is "six hundred forty-one million, nine hundred fifty thousand, nine hundred thirty-six".