688304925 has 384 divisors, whose sum is σ = 1799884800. Its totient is φ = 248832000.

The previous prime is 688304909. The next prime is 688304933. The reversal of 688304925 is 529403886.

It is not a de Polignac number, because 688304925 - 2⁴ = 688304909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 16787905 + ... + 16787945.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^688304925 is an apocalyptic number.

It is an amenable number.

688304925 is an abundant number, since it is smaller than the sum of its proper divisors (1111579875).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688304925 is a wasteful number, since it uses less digits than its factorization.

688304925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 688304925 is about 26235.5660316297. The cubic root of 688304925 is about 882.9313938130.

The spelling of 688304925 in words is "six hundred eighty-eight million, three hundred four thousand, nine hundred twenty-five".