689744972 has 36 divisors (see below), whose sum is σ = 1442088144. Its totient is φ = 287612640.

The previous prime is 689744969. The next prime is 689745013. The reversal of 689744972 is 279447986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40304 + ... + 54807.

It is an arithmetic number, because the mean of its divisors is an integer number (40058004).

Almost surely, 2^689744972 is an apocalyptic number.

It is an amenable number.

689744972 is an abundant number, since it is smaller than the sum of its proper divisors (752343172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689744972 is a wasteful number, since it uses less digits than its factorization.

689744972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95166 (or 95157 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The square root of 689744972 is about 26262.9962494762. The cubic root of 689744972 is about 883.5467107483.

The spelling of 689744972 in words is "six hundred eighty-nine million, seven hundred forty-four thousand, nine hundred seventy-two".