641890562 has 8 divisors (see below), whose sum is σ = 983321856. Its totient is φ = 314116612.

The previous prime is 641890523. The next prime is 641890567. The reversal of 641890562 is 265098146.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (641890567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3414218 + ... + 3414405.

It is an arithmetic number, because the mean of its divisors is an integer number (122915232).

Almost surely, 2^641890562 is an apocalyptic number.

641890562 is a deficient number, since it is larger than the sum of its proper divisors (341431294).

641890562 is a wasteful number, since it uses less digits than its factorization.

641890562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828672.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 641890562 is about 25335.5592399300. The cubic root of 641890562 is about 862.6216027384.

The spelling of 641890562 in words is "six hundred forty-one million, eight hundred ninety thousand, five hundred sixty-two".