621472711 has 4 divisors (see below), whose sum is σ = 636630624. Its totient is φ = 606314800.

The previous prime is 621472703. The next prime is 621472759. The reversal of 621472711 is 117274126.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 621472711 - 2³ = 621472703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621472781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7578895 + ... + 7578976.

It is an arithmetic number, because the mean of its divisors is an integer number (159157656).

Almost surely, 2^621472711 is an apocalyptic number.

621472711 is a deficient number, since it is larger than the sum of its proper divisors (15157913).

621472711 is a wasteful number, since it uses less digits than its factorization.

621472711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15157912.

The product of its digits is 4704, while the sum is 31.

The square root of 621472711 is about 24929.3544039953. The cubic root of 621472711 is about 853.3765168610.

The spelling of 621472711 in words is "six hundred twenty-one million, four hundred seventy-two thousand, seven hundred eleven".