641251354 has 8 divisors (see below), whose sum is σ = 965868948. Its totient is φ = 319295040.

The previous prime is 641251343. The next prime is 641251363. The reversal of 641251354 is 453152146.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 598047025 + 43204329 = 24455^2 + 6573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×641251354² = 822406598013666632, 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 3 ways as a sum of consecutive naturals, for example, 664717 + ... + 665680.

Almost surely, 2^641251354 is an apocalyptic number.

641251354 is a deficient number, since it is larger than the sum of its proper divisors (324617594).

641251354 is a wasteful number, since it uses less digits than its factorization.

641251354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330640.

The product of its digits is 14400, while the sum is 31.

The square root of 641251354 is about 25322.9412588664. The cubic root of 641251354 is about 862.3351687814.

The spelling of 641251354 in words is "six hundred forty-one million, two hundred fifty-one thousand, three hundred fifty-four".