620313656 has 8 divisors (see below), whose sum is σ = 1163088120. Its totient is φ = 310156824.

The previous prime is 620313649. The next prime is 620313667. The reversal of 620313656 is 656313026.

620313656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38769596 + ... + 38769611.

It is an arithmetic number, because the mean of its divisors is an integer number (145386015).

Almost surely, 2^620313656 is an apocalyptic number.

It is an amenable number.

620313656 is a deficient number, since it is larger than the sum of its proper divisors (542774464).

620313656 is a wasteful number, since it uses less digits than its factorization.

620313656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77539213 (or 77539209 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 620313656 is about 24906.0967636440. The cubic root of 620313656 is about 852.8456671334.

The spelling of 620313656 in words is "six hundred twenty million, three hundred thirteen thousand, six hundred fifty-six".