641672514 has 48 divisors (see below), whose sum is σ = 1682373888. Its totient is φ = 172550016.

The previous prime is 641672513. The next prime is 641672519. The reversal of 641672514 is 415276146.

641672514 is a `hidden beast` number, since 64 + 16 + 72 + 514 = 666.

It is not an unprimeable number, because it can be changed into a prime (641672513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147642 + ... + 151925.

It is an arithmetic number, because the mean of its divisors is an integer number (35049456).

Almost surely, 2^641672514 is an apocalyptic number.

641672514 is an abundant number, since it is smaller than the sum of its proper divisors (1040701374).

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

641672514 is a wasteful number, since it uses less digits than its factorization.

641672514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299599 (or 299596 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 641672514 is about 25331.2556735745. The cubic root of 641672514 is about 862.5239151529.

The spelling of 641672514 in words is "six hundred forty-one million, six hundred seventy-two thousand, five hundred fourteen".