620075513 has 6 divisors (see below), whose sum is σ = 635569902. Its totient is φ = 604950080.

The previous prime is 620075501. The next prime is 620075537. The reversal of 620075513 is 315570026.

It can be written as a sum of positive squares in 3 ways, for example, as 48052624 + 572022889 = 6932^2 + 23917^2 .

It is not a de Polignac number, because 620075513 - 2²⁸ = 351640057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620035513) 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, 182756 + ... + 186117.

It is an arithmetic number, because the mean of its divisors is an integer number (105928317).

Almost surely, 2^620075513 is an apocalyptic number.

It is an amenable number.

620075513 is a deficient number, since it is larger than the sum of its proper divisors (15494389).

620075513 is an equidigital number, since it uses as much as digits as its factorization.

620075513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368955 (or 368914 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 620075513 is about 24901.3154873392. The cubic root of 620075513 is about 852.7365152446.

The spelling of 620075513 in words is "six hundred twenty million, seventy-five thousand, five hundred thirteen".