67613680 has 40 divisors (see below), whose sum is σ = 157771152. Its totient is φ = 26947584.

The previous prime is 67613677. The next prime is 67613713. The reversal of 67613680 is 8631676.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 23184 + ... + 25936.

Almost surely, 2^67613680 is an apocalyptic number.

It is an amenable number.

67613680 is an abundant number, since it is smaller than the sum of its proper divisors (90157472).

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

67613680 is a wasteful number, since it uses less digits than its factorization.

67613680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 67613680 is about 8222.7537966304. The cubic root of 67613680 is about 407.3910883617.

The spelling of 67613680 in words is "sixty-seven million, six hundred thirteen thousand, six hundred eighty".