641357530 has 32 divisors (see below), whose sum is σ = 1314154368. Its totient is φ = 223080000.

The previous prime is 641357503. The next prime is 641357557. The reversal of 641357530 is 35753146.

It is an interprime number because it is at equal distance from previous prime (641357503) and next prime (641357557).

It is a super-2 number, since 2×641357530² = 822678962575401800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124221 + ... + 129280.

It is an arithmetic number, because the mean of its divisors is an integer number (41067324).

Almost surely, 2^641357530 is an apocalyptic number.

641357530 is an abundant number, since it is smaller than the sum of its proper divisors (672796838).

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

641357530 is a wasteful number, since it uses less digits than its factorization.

641357530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253542.

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

The square root of 641357530 is about 25325.0376110283. The cubic root of 641357530 is about 862.3827602318.

The spelling of 641357530 in words is "six hundred forty-one million, three hundred fifty-seven thousand, five hundred thirty".