641262592 has 44 divisors (see below), whose sum is σ = 1298289280. Its totient is φ = 316532736.

The previous prime is 641262551. The next prime is 641262599. The reversal of 641262592 is 295262146.

It is a super-2 number, since 2×641262592² = 822435423797116928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641262599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76933 + ... + 84859.

Almost surely, 2^641262592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641262592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649144640).

641262592 is an abundant number, since it is smaller than the sum of its proper divisors (657026688).

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

641262592 is an equidigital number, since it uses as much as digits as its factorization.

641262592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026 (or 8008 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 641262592 is about 25323.1631515496. The cubic root of 641262592 is about 862.3402062580.

The spelling of 641262592 in words is "six hundred forty-one million, two hundred sixty-two thousand, five hundred ninety-two".