620712968 has 8 divisors (see below), whose sum is σ = 1163836830. Its totient is φ = 310356480.

The previous prime is 620712949. The next prime is 620712971. The reversal of 620712968 is 869217026.

It can be written as a sum of positive squares in only one way, i.e., 436893604 + 183819364 = 20902^2 + 13558^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38794553 + ... + 38794568.

Almost surely, 2^620712968 is an apocalyptic number.

It is an amenable number.

620712968 is a deficient number, since it is larger than the sum of its proper divisors (543123862).

620712968 is a wasteful number, since it uses less digits than its factorization.

620712968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77589127 (or 77589123 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 620712968 is about 24914.1118244259. Note that the first 3 decimals coincide. The cubic root of 620712968 is about 853.0286275105.

The spelling of 620712968 in words is "six hundred twenty million, seven hundred twelve thousand, nine hundred sixty-eight".