678953625 has 64 divisors (see below), whose sum is σ = 1299217920. Its totient is φ = 308448000.

The previous prime is 678953609. The next prime is 678953641. The reversal of 678953625 is 526359876.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (678953609) and next prime (678953641).

It is not a de Polignac number, because 678953625 - 2⁴ = 678953609 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 474411 + ... + 475839.

It is an arithmetic number, because the mean of its divisors is an integer number (20300280).

Almost surely, 2^678953625 is an apocalyptic number.

It is an amenable number.

678953625 is a deficient number, since it is larger than the sum of its proper divisors (620264295).

678953625 is a wasteful number, since it uses less digits than its factorization.

678953625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1625 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 678953625 is about 26056.7385718167. The cubic root of 678953625 is about 878.9146506555.

The spelling of 678953625 in words is "six hundred seventy-eight million, nine hundred fifty-three thousand, six hundred twenty-five".