620345715 has 64 divisors (see below), whose sum is σ = 1114767360. Its totient is φ = 292000640.

The previous prime is 620345701. The next prime is 620345717. The reversal of 620345715 is 517543026.

620345715 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620345715 - 2⁶ = 620345651 is a prime.

It is a super-2 number, since 2×620345715² = 769657612237722450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (620345717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1294846 + ... + 1295324.

It is an arithmetic number, because the mean of its divisors is an integer number (17418240).

Almost surely, 2^620345715 is an apocalyptic number.

620345715 is a deficient number, since it is larger than the sum of its proper divisors (494421645).

620345715 is a wasteful number, since it uses less digits than its factorization.

620345715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 620345715 is about 24906.7403527639. The cubic root of 620345715 is about 852.8603591138.

The spelling of 620345715 in words is "six hundred twenty million, three hundred forty-five thousand, seven hundred fifteen".