641458523 has 24 divisors (see below), whose sum is σ = 692320608. Its totient is φ = 594019712.

The previous prime is 641458507. The next prime is 641458547. The reversal of 641458523 is 325854146.

It is not a de Polignac number, because 641458523 - 2⁴ = 641458507 is a prime.

It is a super-2 number, since 2×641458523² = 822938073458683058, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (641458583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3840986 + ... + 3841152.

It is an arithmetic number, because the mean of its divisors is an integer number (28846692).

Almost surely, 2^641458523 is an apocalyptic number.

641458523 is a deficient number, since it is larger than the sum of its proper divisors (50862085).

641458523 is a wasteful number, since it uses less digits than its factorization.

641458523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 380 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 641458523 is about 25327.0314683739. The cubic root of 641458523 is about 862.4280236233.

The spelling of 641458523 in words is "six hundred forty-one million, four hundred fifty-eight thousand, five hundred twenty-three".