67686972 has 24 divisors (see below), whose sum is σ = 158162256. Its totient is φ = 22530048.

The previous prime is 67686961. The next prime is 67686991. The reversal of 67686972 is 27968676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5628 + ... + 12924.

It is an arithmetic number, because the mean of its divisors is an integer number (6590094).

Almost surely, 2^67686972 is an apocalyptic number.

It is an amenable number.

67686972 is an abundant number, since it is smaller than the sum of its proper divisors (90475284).

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

67686972 is a wasteful number, since it uses less digits than its factorization.

67686972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077 (or 8075 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 67686972 is about 8227.2092473694. The cubic root of 67686972 is about 407.5382367172.

The spelling of 67686972 in words is "sixty-seven million, six hundred eighty-six thousand, nine hundred seventy-two".