621272616 has 32 divisors (see below), whose sum is σ = 1644546240. Its totient is φ = 194908928.

The previous prime is 621272591. The next prime is 621272629. The reversal of 621272616 is 616272126.

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, 760956 + ... + 761771.

It is an arithmetic number, because the mean of its divisors is an integer number (51392070).

Almost surely, 2^621272616 is an apocalyptic number.

It is an amenable number.

621272616 is an abundant number, since it is smaller than the sum of its proper divisors (1023273624).

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

621272616 is a wasteful number, since it uses less digits than its factorization.

621272616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522753 (or 1522749 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 621272616 is about 24925.3408401972. The cubic root of 621272616 is about 853.2849200778.

The spelling of 621272616 in words is "six hundred twenty-one million, two hundred seventy-two thousand, six hundred sixteen".