620287732 has 12 divisors (see below), whose sum is σ = 1085722596. Its totient is φ = 310081280.

The previous prime is 620287727. The next prime is 620287741. The reversal of 620287732 is 237782026.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100721296 + 519566436 = 10036^2 + 22794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 620287691 and 620287700.

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 3 ways as a sum of consecutive naturals, for example, 12132 + ... + 37252.

It is an arithmetic number, because the mean of its divisors is an integer number (90476883).

Almost surely, 2^620287732 is an apocalyptic number.

It is an amenable number.

620287732 is a deficient number, since it is larger than the sum of its proper divisors (465434864).

620287732 is a wasteful number, since it uses less digits than its factorization.

620287732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31298 (or 31296 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 620287732 is about 24905.5763233859. The cubic root of 620287732 is about 852.8337863272.

The spelling of 620287732 in words is "six hundred twenty million, two hundred eighty-seven thousand, seven hundred thirty-two".