621242662 has 16 divisors (see below), whose sum is σ = 987217632. Its totient is φ = 292190080.

The previous prime is 621242659. The next prime is 621242681. The reversal of 621242662 is 266242126.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 78612 + ... + 86152.

It is an arithmetic number, because the mean of its divisors is an integer number (61701102).

Almost surely, 2^621242662 is an apocalyptic number.

621242662 is a deficient number, since it is larger than the sum of its proper divisors (365974970).

621242662 is a wasteful number, since it uses less digits than its factorization.

621242662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983.

The product of its digits is 13824, while the sum is 31.

The square root of 621242662 is about 24924.7399585231. The cubic root of 621242662 is about 853.2712064484.

Adding to 621242662 its reverse (266242126), we get a palindrome (887484788).

The spelling of 621242662 in words is "six hundred twenty-one million, two hundred forty-two thousand, six hundred sixty-two".