689782972 has 12 divisors (see below), whose sum is σ = 1259603856. Its totient is φ = 329896160.

The previous prime is 689782927. The next prime is 689782993. The reversal of 689782972 is 279287986.

It is a super-2 number, since 2×689782972² = 951601096922305568, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3748729 + ... + 3748912.

It is an arithmetic number, because the mean of its divisors is an integer number (104966988).

Almost surely, 2^689782972 is an apocalyptic number.

It is an amenable number.

689782972 is a deficient number, since it is larger than the sum of its proper divisors (569820884).

689782972 is a wasteful number, since it uses less digits than its factorization.

689782972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7497668 (or 7497666 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 58.

The square root of 689782972 is about 26263.7196908587. The cubic root of 689782972 is about 883.5629361456.

The spelling of 689782972 in words is "six hundred eighty-nine million, seven hundred eighty-two thousand, nine hundred seventy-two".