620460064 has 24 divisors (see below), whose sum is σ = 1396035648. Its totient is φ = 265911360.

The previous prime is 620460053. The next prime is 620460089. The reversal of 620460064 is 460064026.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384732 + ... + 1385179.

It is an arithmetic number, because the mean of its divisors is an integer number (58168152).

Almost surely, 2^620460064 is an apocalyptic number.

It is an amenable number.

620460064 is an abundant number, since it is smaller than the sum of its proper divisors (775575584).

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

620460064 is a wasteful number, since it uses less digits than its factorization.

620460064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769928 (or 2769920 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 620460064 is about 24909.0357902509. The cubic root of 620460064 is about 852.9127587867.

The spelling of 620460064 in words is "six hundred twenty million, four hundred sixty thousand, sixty-four".