621634323 has 8 divisors (see below), whose sum is σ = 840519936. Its totient is φ = 408585800.

The previous prime is 621634319. The next prime is 621634327. The reversal of 621634323 is 323436126.

It is an interprime number because it is at equal distance from previous prime (621634319) and next prime (621634327).

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

It is a cyclic number.

It is not a de Polignac number, because 621634323 - 2² = 621634319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621634327) by changing a digit.

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, 1459023 + ... + 1459448.

It is an arithmetic number, because the mean of its divisors is an integer number (105064992).

Almost surely, 2^621634323 is an apocalyptic number.

621634323 is a deficient number, since it is larger than the sum of its proper divisors (218885613).

621634323 is a wasteful number, since it uses less digits than its factorization.

621634323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918545.

The product of its digits is 15552, while the sum is 30.

The square root of 621634323 is about 24932.5955929181. The cubic root of 621634323 is about 853.4504830653.

The spelling of 621634323 in words is "six hundred twenty-one million, six hundred thirty-four thousand, three hundred twenty-three".