620345704 has 24 divisors (see below), whose sum is σ = 1278503730. Its totient is φ = 281974880.

The previous prime is 620345701. The next prime is 620345717. The reversal of 620345704 is 407543026.

It can be written as a sum of positive squares in only one way, i.e., 524501604 + 95844100 = 22902^2 + 9790^2 .

It is not an unprimeable number, because it can be changed into a prime (620345701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319459 + ... + 321394.

Almost surely, 2^620345704 is an apocalyptic number.

It is an amenable number.

620345704 is an abundant number, since it is smaller than the sum of its proper divisors (658158026).

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

620345704 is a wasteful number, since it uses less digits than its factorization.

620345704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640881 (or 640866 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 620345704 is about 24906.7401319402. The cubic root of 620345704 is about 852.8603540728.

The spelling of 620345704 in words is "six hundred twenty million, three hundred forty-five thousand, seven hundred four".