620238136 has 16 divisors (see below), whose sum is σ = 1329081840. Its totient is φ = 265816320.

The previous prime is 620238127. The next prime is 620238137. The reversal of 620238136 is 631832026.

It is a junction number, because it is equal to n+sod(n) for n = 620238098 and 620238107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620238137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5537785 + ... + 5537896.

It is an arithmetic number, because the mean of its divisors is an integer number (83067615).

Almost surely, 2^620238136 is an apocalyptic number.

It is an amenable number.

620238136 is an abundant number, since it is smaller than the sum of its proper divisors (708843704).

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

620238136 is a wasteful number, since it uses less digits than its factorization.

620238136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11075694 (or 11075690 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 620238136 is about 24904.5806228493. The cubic root of 620238136 is about 852.8110558696.

The spelling of 620238136 in words is "six hundred twenty million, two hundred thirty-eight thousand, one hundred thirty-six".