641353570 has 64 divisors (see below), whose sum is σ = 1389467520. Its totient is φ = 210009600.

The previous prime is 641353567. The next prime is 641353571. The reversal of 641353570 is 75353146.

It is a super-2 number, since 2×641353570² = 822668803503489800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641353571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53161 + ... + 64099.

It is an arithmetic number, because the mean of its divisors is an integer number (21710430).

Almost surely, 2^641353570 is an apocalyptic number.

641353570 is an abundant number, since it is smaller than the sum of its proper divisors (748113950).

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

641353570 is a wasteful number, since it uses less digits than its factorization.

641353570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 641353570 is about 25324.9594274107. The cubic root of 641353570 is about 862.3809853285.

The spelling of 641353570 in words is "six hundred forty-one million, three hundred fifty-three thousand, five hundred seventy".