620906732 has 24 divisors (see below), whose sum is σ = 1104207552. Its totient is φ = 305450000.

The previous prime is 620906729. The next prime is 620906753. The reversal of 620906732 is 237609026.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 620906692 and 620906701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79607 + ... + 87057.

It is an arithmetic number, because the mean of its divisors is an integer number (46008648).

Almost surely, 2^620906732 is an apocalyptic number.

It is an amenable number.

620906732 is a deficient number, since it is larger than the sum of its proper divisors (483300820).

620906732 is a wasteful number, since it uses less digits than its factorization.

620906732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7789 (or 7787 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 620906732 is about 24918.0001605265. Note that the first 3 decimals coincide. The cubic root of 620906732 is about 853.1173797742.

The spelling of 620906732 in words is "six hundred twenty million, nine hundred six thousand, seven hundred thirty-two".