689877925 has 24 divisors (see below), whose sum is σ = 936761472. Its totient is φ = 499824000.

The previous prime is 689877917. The next prime is 689877941. The reversal of 689877925 is 529778986.

It is not a de Polignac number, because 689877925 - 2³ = 689877917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69897 + ... + 79153.

It is an arithmetic number, because the mean of its divisors is an integer number (39031728).

Almost surely, 2^689877925 is an apocalyptic number.

It is an amenable number.

689877925 is a deficient number, since it is larger than the sum of its proper divisors (246883547).

689877925 is a wasteful number, since it uses less digits than its factorization.

689877925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549 (or 9544 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The square root of 689877925 is about 26265.5273124299. The cubic root of 689877925 is about 883.6034769657.

The spelling of 689877925 in words is "six hundred eighty-nine million, eight hundred seventy-seven thousand, nine hundred twenty-five".