689544625 has 64 divisors (see below), whose sum is σ = 1107984384. Its totient is φ = 415800000.

The previous prime is 689544619. The next prime is 689544631. The reversal of 689544625 is 526445986.

689544625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (689544619) and next prime (689544631).

It is not a de Polignac number, because 689544625 - 2⁵ = 689544593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 297220 + ... + 299530.

It is an arithmetic number, because the mean of its divisors is an integer number (17312256).

Almost surely, 2^689544625 is an apocalyptic number.

It is an amenable number.

689544625 is a deficient number, since it is larger than the sum of its proper divisors (418439759).

689544625 is a wasteful number, since it uses less digits than its factorization.

689544625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2365 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The square root of 689544625 is about 26259.1817275406. The cubic root of 689544625 is about 883.4611559023.

The spelling of 689544625 in words is "six hundred eighty-nine million, five hundred forty-four thousand, six hundred twenty-five".