641567032 has 8 divisors (see below), whose sum is σ = 1202938200. Its totient is φ = 320783512.

The previous prime is 641567023. The next prime is 641567051. The reversal of 641567032 is 230765146.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40097932 + ... + 40097947.

It is an arithmetic number, because the mean of its divisors is an integer number (150367275).

Almost surely, 2^641567032 is an apocalyptic number.

It is an amenable number.

641567032 is a deficient number, since it is larger than the sum of its proper divisors (561371168).

641567032 is a wasteful number, since it uses less digits than its factorization.

641567032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80195885 (or 80195881 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 641567032 is about 25329.1735356683. The cubic root of 641567032 is about 862.4766502675.

The spelling of 641567032 in words is "six hundred forty-one million, five hundred sixty-seven thousand, thirty-two".