620693064 has 64 divisors (see below), whose sum is σ = 1814904000. Its totient is φ = 196007040.

The previous prime is 620693057. The next prime is 620693149. The reversal of 620693064 is 460396026.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71517 + ... + 79724.

It is an arithmetic number, because the mean of its divisors is an integer number (28357875).

Almost surely, 2^620693064 is an apocalyptic number.

It is an amenable number.

620693064 is an abundant number, since it is smaller than the sum of its proper divisors (1194210936).

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

620693064 is a wasteful number, since it uses less digits than its factorization.

620693064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151275 (or 151265 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 620693064 is about 24913.7123688944. The cubic root of 620693064 is about 853.0195095745.

The spelling of 620693064 in words is "six hundred twenty million, six hundred ninety-three thousand, sixty-four".