620487231 has 32 divisors (see below), whose sum is σ = 1019601408. Its totient is φ = 326851200.

The previous prime is 620487229. The next prime is 620487239. The reversal of 620487231 is 132784026.

It is not a de Polignac number, because 620487231 - 2¹ = 620487229 is a prime.

It is a super-2 number, since 2×620487231² = 770008807668094722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620487192 and 620487201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620487239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354300 + ... + 356046.

It is an arithmetic number, because the mean of its divisors is an integer number (31862544).

Almost surely, 2^620487231 is an apocalyptic number.

620487231 is a deficient number, since it is larger than the sum of its proper divisors (399114177).

620487231 is a wasteful number, since it uses less digits than its factorization.

620487231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 620487231 is about 24909.5811084811. The cubic root of 620487231 is about 852.9252069382.

The spelling of 620487231 in words is "six hundred twenty million, four hundred eighty-seven thousand, two hundred thirty-one".