620431365 has 64 divisors (see below), whose sum is σ = 1070899200. Its totient is φ = 306028800.

The previous prime is 620431351. The next prime is 620431373. The reversal of 620431365 is 563134026.

It is not a de Polignac number, because 620431365 - 2¹⁰ = 620430341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1874250 + ... + 1874580.

It is an arithmetic number, because the mean of its divisors is an integer number (16732800).

Almost surely, 2^620431365 is an apocalyptic number.

It is an amenable number.

620431365 is a deficient number, since it is larger than the sum of its proper divisors (450467835).

620431365 is a wasteful number, since it uses less digits than its factorization.

620431365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 620431365 is about 24908.4597074970. The cubic root of 620431365 is about 852.8996082649.

It can be divided in two parts, 620 and 431365, that added together give a triangular number (431985 = T₉₂₉).

The spelling of 620431365 in words is "six hundred twenty million, four hundred thirty-one thousand, three hundred sixty-five".