67656725 has 12 divisors (see below), whose sum is σ = 86601600. Its totient is φ = 52378800.

The previous prime is 67656713. The next prime is 67656749. The reversal of 67656725 is 52765676.

It is not a de Polignac number, because 67656725 - 2⁴ = 67656709 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42875 + ... + 44424.

It is an arithmetic number, because the mean of its divisors is an integer number (7216800).

Almost surely, 2^67656725 is an apocalyptic number.

It is an amenable number.

67656725 is a deficient number, since it is larger than the sum of its proper divisors (18944875).

67656725 is a wasteful number, since it uses less digits than its factorization.

67656725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87340 (or 87335 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The square root of 67656725 is about 8225.3708123099. The cubic root of 67656725 is about 407.4775226916.

The spelling of 67656725 in words is "sixty-seven million, six hundred fifty-six thousand, seven hundred twenty-five".