689751125 has 16 divisors (see below), whose sum is σ = 983783424. Its totient is φ = 472971600.

The previous prime is 689751113. The next prime is 689751143. The reversal of 689751125 is 521157986.

It is not a de Polignac number, because 689751125 - 2¹² = 689747029 is a prime.

It is a super-2 number, since 2×689751125² = 951513228877531250, which contains 22 as substring.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 393269 + ... + 395018.

It is an arithmetic number, because the mean of its divisors is an integer number (61486464).

Almost surely, 2^689751125 is an apocalyptic number.

It is an amenable number.

689751125 is a deficient number, since it is larger than the sum of its proper divisors (294032299).

689751125 is an equidigital number, since it uses as much as digits as its factorization.

689751125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788309 (or 788299 counting only the distinct ones).

The product of its digits is 151200, while the sum is 44.

The square root of 689751125 is about 26263.1133912185. The cubic root of 689751125 is about 883.5493380222.

The spelling of 689751125 in words is "six hundred eighty-nine million, seven hundred fifty-one thousand, one hundred twenty-five".