620124637 has 6 divisors (see below), whose sum is σ = 681624734. Its totient is φ = 563749560.

The previous prime is 620124619. The next prime is 620124649. The reversal of 620124637 is 736421026.

It can be written as a sum of positive squares in only one way, i.e., 368870436 + 251254201 = 19206^2 + 15851^2 .

It is not a de Polignac number, because 620124637 - 2⁷ = 620124509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620124599 and 620124608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620124667) 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, 2562378 + ... + 2562619.

Almost surely, 2^620124637 is an apocalyptic number.

It is an amenable number.

620124637 is a deficient number, since it is larger than the sum of its proper divisors (61500097).

620124637 is a wasteful number, since it uses less digits than its factorization.

620124637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125019 (or 5125008 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 620124637 is about 24902.3018413961. The cubic root of 620124637 is about 852.7590333205.

The spelling of 620124637 in words is "six hundred twenty million, one hundred twenty-four thousand, six hundred thirty-seven".