620137836 has 48 divisors (see below), whose sum is σ = 1610985600. Its totient is φ = 206298576.

The previous prime is 620137813. The next prime is 620137909. The reversal of 620137836 is 638731026.

It is a happy number.

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 620137836.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50995 + ... + 61973.

It is an arithmetic number, because the mean of its divisors is an integer number (33562200).

Almost surely, 2^620137836 is an apocalyptic number.

It is an amenable number.

620137836 is an abundant number, since it is smaller than the sum of its proper divisors (990847764).

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

620137836 is a wasteful number, since it uses less digits than its factorization.

620137836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515 (or 11507 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 620137836 is about 24902.5668556476. The cubic root of 620137836 is about 852.7650834411.

The spelling of 620137836 in words is "six hundred twenty million, one hundred thirty-seven thousand, eight hundred thirty-six".