620185013 has 6 divisors (see below), whose sum is σ = 721439766. Its totient is φ = 531587112.

The previous prime is 620184991. The next prime is 620185037. The reversal of 620185013 is 310581026.

It can be written as a sum of positive squares in only one way, i.e., 618914884 + 1270129 = 24878^2 + 1127^2 .

It is not a de Polignac number, because 620185013 - 2¹⁸ = 619922869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620185043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6328370 + ... + 6328467.

It is an arithmetic number, because the mean of its divisors is an integer number (120239961).

Almost surely, 2^620185013 is an apocalyptic number.

It is an amenable number.

620185013 is a deficient number, since it is larger than the sum of its proper divisors (101254753).

620185013 is a wasteful number, since it uses less digits than its factorization.

620185013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656851 (or 12656844 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 620185013 is about 24903.5140693036. The cubic root of 620185013 is about 852.7867076005.

The spelling of 620185013 in words is "six hundred twenty million, one hundred eighty-five thousand, thirteen".