641677258 has 16 divisors (see below), whose sum is σ = 998606880. Its totient is φ = 308872816.

The previous prime is 641677247. The next prime is 641677259. The reversal of 641677258 is 852776146.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (641677259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4185 + ... + 36067.

It is an arithmetic number, because the mean of its divisors is an integer number (62412930).

Almost surely, 2^641677258 is an apocalyptic number.

641677258 is a deficient number, since it is larger than the sum of its proper divisors (356929622).

641677258 is a wasteful number, since it uses less digits than its factorization.

641677258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32261.

The product of its digits is 564480, while the sum is 46.

The square root of 641677258 is about 25331.3493126600. The cubic root of 641677258 is about 862.5260407457.

The spelling of 641677258 in words is "six hundred forty-one million, six hundred seventy-seven thousand, two hundred fifty-eight".