641470048 has 12 divisors (see below), whose sum is σ = 1262894220. Its totient is φ = 320735008.

The previous prime is 641470009. The next prime is 641470079. The reversal of 641470048 is 840074146.

It is a super-2 number, since 2×641470048² = 822967644962244608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 641469995 and 641470022.

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, 10022938 + ... + 10023001.

It is an arithmetic number, because the mean of its divisors is an integer number (105241185).

Almost surely, 2^641470048 is an apocalyptic number.

It is an amenable number.

641470048 is a deficient number, since it is larger than the sum of its proper divisors (621424172).

641470048 is a wasteful number, since it uses less digits than its factorization.

641470048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045949 (or 20045941 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 641470048 is about 25327.2589910555. The cubic root of 641470048 is about 862.4331886356.

The spelling of 641470048 in words is "six hundred forty-one million, four hundred seventy thousand, forty-eight".