689750975 has 12 divisors (see below), whose sum is σ = 866120160. Its totient is φ = 544814400.

The previous prime is 689750969. The next prime is 689750981. The reversal of 689750975 is 579057986.

It is an interprime number because it is at equal distance from previous prime (689750969) and next prime (689750981).

It is not a de Polignac number, because 689750975 - 2¹² = 689746879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 689750975.

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 11 ways as a sum of consecutive naturals, for example, 172646 + ... + 176595.

It is an arithmetic number, because the mean of its divisors is an integer number (72176680).

Almost surely, 2^689750975 is an apocalyptic number.

689750975 is a deficient number, since it is larger than the sum of its proper divisors (176369185).

689750975 is a wasteful number, since it uses less digits than its factorization.

689750975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349330 (or 349325 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 56.

The square root of 689750975 is about 26263.1105355021. The cubic root of 689750975 is about 883.5492739737.

The spelling of 689750975 in words is "six hundred eighty-nine million, seven hundred fifty thousand, nine hundred seventy-five".