68628625 has 32 divisors (see below), whose sum is σ = 93169440. Its totient is φ = 50169600.

The previous prime is 68628617. The next prime is 68628647. The reversal of 68628625 is 52682686.

It can be written as a sum of positive squares in 16 ways, for example, as 68624656 + 3969 = 8284^2 + 63^2 .

It is not a de Polignac number, because 68628625 - 2³ = 68628617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254991 + ... + 255259.

It is an arithmetic number, because the mean of its divisors is an integer number (2911545).

Almost surely, 2^68628625 is an apocalyptic number.

68628625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68628625 is a deficient number, since it is larger than the sum of its proper divisors (24540815).

68628625 is a wasteful number, since it uses less digits than its factorization.

68628625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 444 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 68628625 is about 8284.2395547208. The cubic root of 68628625 is about 409.4194142127.

The spelling of 68628625 in words is "sixty-eight million, six hundred twenty-eight thousand, six hundred twenty-five".