621623998 has 8 divisors (see below), whose sum is σ = 932615640. Its totient is φ = 310752120.

The previous prime is 621623963. The next prime is 621624037. The reversal of 621623998 is 899326126.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15588 + ... + 38551.

It is an arithmetic number, because the mean of its divisors is an integer number (116576955).

Almost surely, 2^621623998 is an apocalyptic number.

621623998 is a deficient number, since it is larger than the sum of its proper divisors (310991642).

621623998 is a wasteful number, since it uses less digits than its factorization.

621623998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59882.

The product of its digits is 279936, while the sum is 46.

The square root of 621623998 is about 24932.3885337927. The cubic root of 621623998 is about 853.4457579267.

The spelling of 621623998 in words is "six hundred twenty-one million, six hundred twenty-three thousand, nine hundred ninety-eight".