67967967 has 16 divisors (see below), whose sum is σ = 97827840. Its totient is φ = 41846112.

The previous prime is 67967951. The next prime is 67967971. The reversal of 67967967 is 76976976.

It is not a de Polignac number, because 67967967 - 2⁴ = 67967951 is a prime.

It is a super-2 number, since 2×67967967² = 9239289076226178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67967917) 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, 14983 + ... + 18984.

It is an arithmetic number, because the mean of its divisors is an integer number (6114240).

Almost surely, 2^67967967 is an apocalyptic number.

67967967 is a deficient number, since it is larger than the sum of its proper divisors (29859873).

67967967 is a wasteful number, since it uses less digits than its factorization.

67967967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34022.

The product of its digits is 6001128, while the sum is 57.

The square root of 67967967 is about 8244.2687365224. The cubic root of 67967967 is about 408.1014081359.

Subtracting 67967967 from its reverse (76976976), we obtain a palindrome (9009009).

The spelling of 67967967 in words is "sixty-seven million, nine hundred sixty-seven thousand, nine hundred sixty-seven".