67681164 has 24 divisors (see below), whose sum is σ = 158986800. Its totient is φ = 22408384.

The previous prime is 67681139. The next prime is 67681171. The reversal of 67681164 is 46118676.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17139 + ... + 20714.

It is an arithmetic number, because the mean of its divisors is an integer number (6624450).

Almost surely, 2^67681164 is an apocalyptic number.

It is an amenable number.

67681164 is an abundant number, since it is smaller than the sum of its proper divisors (91305636).

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

67681164 is a wasteful number, since it uses less digits than its factorization.

67681164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38009 (or 38007 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 67681164 is about 8226.8562646980. The cubic root of 67681164 is about 407.5265798714.

The spelling of 67681164 in words is "sixty-seven million, six hundred eighty-one thousand, one hundred sixty-four".