620774713564 has 6 divisors (see below), whose sum is σ = 1086355748744. Its totient is φ = 310387356780.

The previous prime is 620774713547. The next prime is 620774713577. The reversal of 620774713564 is 465317477026.

It is a super-2 number, since 2×620774713564² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77596839192 + ... + 77596839199.

Almost surely, 2^620774713564 is an apocalyptic number.

It is an amenable number.

620774713564 is a deficient number, since it is larger than the sum of its proper divisors (465581035180).

620774713564 is a wasteful number, since it uses less digits than its factorization.

620774713564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155193678395 (or 155193678393 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 620774713564 in words is "six hundred twenty billion, seven hundred seventy-four million, seven hundred thirteen thousand, five hundred sixty-four".