67667913 has 16 divisors (see below), whose sum is σ = 100483840. Its totient is φ = 45006192.

The previous prime is 67667869. The next prime is 67667927. The reversal of 67667913 is 31976676.

It is not a de Polignac number, because 67667913 - 2⁹ = 67667401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67667953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9795 + ... + 15207.

It is an arithmetic number, because the mean of its divisors is an integer number (6280240).

Almost surely, 2^67667913 is an apocalyptic number.

It is an amenable number.

67667913 is a deficient number, since it is larger than the sum of its proper divisors (32815927).

67667913 is a wasteful number, since it uses less digits than its factorization.

67667913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885 (or 5879 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 67667913 is about 8226.0508751162. The cubic root of 67667913 is about 407.4999821848.

The spelling of 67667913 in words is "sixty-seven million, six hundred sixty-seven thousand, nine hundred thirteen".