67973831 has 2 divisors, whose sum is σ = 67973832. Its totient is φ = 67973830.

The previous prime is 67973827. The next prime is 67973833. The reversal of 67973831 is 13837976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67973831 - 2² = 67973827 is a prime.

It is a super-2 number, since 2×67973831² = 9240883401633122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 67973833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67973833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33986915 + 33986916.

It is an arithmetic number, because the mean of its divisors is an integer number (33986916).

Almost surely, 2^67973831 is an apocalyptic number.

67973831 is a deficient number, since it is larger than the sum of its proper divisors (1).

67973831 is an equidigital number, since it uses as much as digits as its factorization.

67973831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 67973831 is about 8244.6243698546. The cubic root of 67973831 is about 408.1131442421.

The spelling of 67973831 in words is "sixty-seven million, nine hundred seventy-three thousand, eight hundred thirty-one".