684465925 has 24 divisors (see below), whose sum is σ = 997123680. Its totient is φ = 459499200.

The previous prime is 684465913. The next prime is 684465953. The reversal of 684465925 is 529564486.

It is not a de Polignac number, because 684465925 - 2⁵ = 684465893 is a prime.

It is a super-2 number, since 2×684465925² = 936987204972211250, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 92155 + ... + 99304.

It is an arithmetic number, because the mean of its divisors is an integer number (41546820).

Almost surely, 2^684465925 is an apocalyptic number.

684465925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

684465925 is a deficient number, since it is larger than the sum of its proper divisors (312657755).

684465925 is a wasteful number, since it uses less digits than its factorization.

684465925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191493 (or 191488 counting only the distinct ones).

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

The square root of 684465925 is about 26162.2996886742. The cubic root of 684465925 is about 881.2868247442.

The spelling of 684465925 in words is "six hundred eighty-four million, four hundred sixty-five thousand, nine hundred twenty-five".