67715680 has 48 divisors (see below), whose sum is σ = 166942944. Its totient is φ = 25907200.

The previous prime is 67715671. The next prime is 67715701. The reversal of 67715680 is 8651776.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5521 + ... + 12880.

It is an arithmetic number, because the mean of its divisors is an integer number (3477978).

Almost surely, 2^67715680 is an apocalyptic number.

It is an amenable number.

67715680 is an abundant number, since it is smaller than the sum of its proper divisors (99227264).

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

67715680 is a wasteful number, since it uses less digits than its factorization.

67715680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18439 (or 18431 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 67715680 is about 8228.9537609589. The cubic root of 67715680 is about 407.5958448196.

The spelling of 67715680 in words is "sixty-seven million, seven hundred fifteen thousand, six hundred eighty".