68674691 has 2 divisors, whose sum is σ = 68674692. Its totient is φ = 68674690.

The previous prime is 68674681. The next prime is 68674693. The reversal of 68674691 is 19647686.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68674691 - 2¹⁴ = 68658307 is a prime.

Together with 68674693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68674693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34337345 + 34337346.

It is an arithmetic number, because the mean of its divisors is an integer number (34337346).

Almost surely, 2^68674691 is an apocalyptic number.

68674691 is a deficient number, since it is larger than the sum of its proper divisors (1).

68674691 is an equidigital number, since it uses as much as digits as its factorization.

68674691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 68674691 is about 8287.0194279970. The cubic root of 68674691 is about 409.5109993999.

The spelling of 68674691 in words is "sixty-eight million, six hundred seventy-four thousand, six hundred ninety-one".