620469708 has 12 divisors (see below), whose sum is σ = 1447762680. Its totient is φ = 206823232.

The previous prime is 620469691. The next prime is 620469709. The reversal of 620469708 is 807964026.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 620469708.

It is not an unprimeable number, because it can be changed into a prime (620469709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25852893 + ... + 25852916.

It is an arithmetic number, because the mean of its divisors is an integer number (120646890).

Almost surely, 2^620469708 is an apocalyptic number.

It is an amenable number.

620469708 is an abundant number, since it is smaller than the sum of its proper divisors (827292972).

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

620469708 is a wasteful number, since it uses less digits than its factorization.

620469708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51705816 (or 51705814 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 620469708 is about 24909.2293738686. The cubic root of 620469708 is about 852.9171777915.

The spelling of 620469708 in words is "six hundred twenty million, four hundred sixty-nine thousand, seven hundred eight".