687796225 has 12 divisors (see below), whose sum is σ = 880380160. Its totient is φ = 532486800.

The previous prime is 687796169. The next prime is 687796229. The reversal of 687796225 is 522697786.

It is not a de Polignac number, because 687796225 - 2⁷ = 687796097 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (687796229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442965 + ... + 444514.

Almost surely, 2^687796225 is an apocalyptic number.

It is an amenable number.

687796225 is a deficient number, since it is larger than the sum of its proper divisors (192583935).

687796225 is a wasteful number, since it uses less digits than its factorization.

687796225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887520 (or 887515 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The square root of 687796225 is about 26225.8693850175. The cubic root of 687796225 is about 882.7138265312.

The spelling of 687796225 in words is "six hundred eighty-seven million, seven hundred ninety-six thousand, two hundred twenty-five".