641432360 has 16 divisors (see below), whose sum is σ = 1443222900. Its totient is φ = 256572928.

The previous prime is 641432357. The next prime is 641432371. The reversal of 641432360 is 63234146.

It can be written as a sum of positive squares in 2 ways, for example, as 624900004 + 16532356 = 24998^2 + 4066^2 .

It is a super-2 number, since 2×641432360² = 822870944910339200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8017865 + ... + 8017944.

Almost surely, 2^641432360 is an apocalyptic number.

It is an amenable number.

641432360 is an abundant number, since it is smaller than the sum of its proper divisors (801790540).

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

641432360 is a wasteful number, since it uses less digits than its factorization.

641432360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16035820 (or 16035816 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 641432360 is about 25326.5149596228. The cubic root of 641432360 is about 862.4162982556.

The spelling of 641432360 in words is "six hundred forty-one million, four hundred thirty-two thousand, three hundred sixty".