621272568 has 96 divisors (see below), whose sum is σ = 1869166800. Its totient is φ = 171376128.

The previous prime is 621272567. The next prime is 621272569. The reversal of 621272568 is 865272126.

It is an interprime number because it is at equal distance from previous prime (621272567) and next prime (621272569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621272567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24996 + ... + 43212.

Almost surely, 2^621272568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621272568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934583400).

621272568 is an abundant number, since it is smaller than the sum of its proper divisors (1247894232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621272568 is a wasteful number, since it uses less digits than its factorization.

621272568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18269 (or 18258 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 621272568 is about 24925.3398773216. The cubic root of 621272568 is about 853.2848981026.

The spelling of 621272568 in words is "six hundred twenty-one million, two hundred seventy-two thousand, five hundred sixty-eight".