621622994 has 16 divisors (see below), whose sum is σ = 939523200. Its totient is φ = 308454480.

The previous prime is 621622973. The next prime is 621623011. The reversal of 621622994 is 499226126.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400532 + ... + 402080.

It is an arithmetic number, because the mean of its divisors is an integer number (58720200).

Almost surely, 2^621622994 is an apocalyptic number.

621622994 is a deficient number, since it is larger than the sum of its proper divisors (317900206).

621622994 is a wasteful number, since it uses less digits than its factorization.

621622994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945.

The product of its digits is 93312, while the sum is 41.

The square root of 621622994 is about 24932.3683993318. The cubic root of 621622994 is about 853.4452984528.

It can be divided in two parts, 62162 and 2994, that added together give a palindrome (65156).

The spelling of 621622994 in words is "six hundred twenty-one million, six hundred twenty-two thousand, nine hundred ninety-four".