620538215 has 24 divisors (see below), whose sum is σ = 820312080. Its totient is φ = 450299520.

The previous prime is 620538209. The next prime is 620538221. The reversal of 620538215 is 512835026.

It is an interprime number because it is at equal distance from previous prime (620538209) and next prime (620538221).

It is not a de Polignac number, because 620538215 - 2⁸ = 620537959 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 373667 + ... + 375323.

It is an arithmetic number, because the mean of its divisors is an integer number (34179670).

Almost surely, 2^620538215 is an apocalyptic number.

620538215 is a deficient number, since it is larger than the sum of its proper divisors (199773865).

620538215 is a wasteful number, since it uses less digits than its factorization.

620538215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 620538215 is about 24910.6044687800. The cubic root of 620538215 is about 852.9485672620.

It can be divided in two parts, 620 and 538215, that added together give a palindrome (538835).

The spelling of 620538215 in words is "six hundred twenty million, five hundred thirty-eight thousand, two hundred fifteen".