641262858 has 24 divisors (see below), whose sum is σ = 1304674368. Its totient is φ = 210124488.

The previous prime is 641262823. The next prime is 641262893. The reversal of 641262858 is 858262146.

It is an interprime number because it is at equal distance from previous prime (641262823) and next prime (641262893).

It is a super-2 number, since 2×641262858² = 822436106100656328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5535 + ... + 36237.

It is an arithmetic number, because the mean of its divisors is an integer number (54361432).

Almost surely, 2^641262858 is an apocalyptic number.

641262858 is an abundant number, since it is smaller than the sum of its proper divisors (663411510).

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

641262858 is a wasteful number, since it uses less digits than its factorization.

641262858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30826 (or 30767 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 641262858 is about 25323.1684036575. The cubic root of 641262858 is about 862.3403254928.

The spelling of 641262858 in words is "six hundred forty-one million, two hundred sixty-two thousand, eight hundred fifty-eight".