641950952 has 8 divisors (see below), whose sum is σ = 1203658050. Its totient is φ = 320975472.

The previous prime is 641950951. The next prime is 641950979. The reversal of 641950952 is 259059146.

It can be written as a sum of positive squares in only one way, i.e., 535737316 + 106213636 = 23146^2 + 10306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (641950951) by changing a digit.

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 as a sum of consecutive naturals, namely, 40121927 + ... + 40121942.

Almost surely, 2^641950952 is an apocalyptic number.

It is an amenable number.

641950952 is a deficient number, since it is larger than the sum of its proper divisors (561707098).

641950952 is a wasteful number, since it uses less digits than its factorization.

641950952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80243875 (or 80243871 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 641950952 is about 25336.7510150769. The cubic root of 641950952 is about 862.6486541228.

The spelling of 641950952 in words is "six hundred forty-one million, nine hundred fifty thousand, nine hundred fifty-two".