620505396 has 72 divisors (see below), whose sum is σ = 1794875264. Its totient is φ = 177059520.

The previous prime is 620505377. The next prime is 620505407. The reversal of 620505396 is 693505026.

620505396 is a `hidden beast` number, since 62 + 0 + 505 + 3 + 96 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 620505396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347121 + ... + 348903.

Almost surely, 2^620505396 is an apocalyptic number.

It is an amenable number.

620505396 is an abundant number, since it is smaller than the sum of its proper divisors (1174369868).

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

620505396 is a wasteful number, since it uses less digits than its factorization.

620505396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 620505396 is about 24909.9457245495. The cubic root of 620505396 is about 852.9335300938.

The spelling of 620505396 in words is "six hundred twenty million, five hundred five thousand, three hundred ninety-six".