67799491 has 2 divisors, whose sum is σ = 67799492. Its totient is φ = 67799490.

The previous prime is 67799489. The next prime is 67799497. The reversal of 67799491 is 19499776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67799491 - 2¹ = 67799489 is a prime.

Together with 67799489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67799497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33899745 + 33899746.

It is an arithmetic number, because the mean of its divisors is an integer number (33899746).

Almost surely, 2^67799491 is an apocalyptic number.

67799491 is a deficient number, since it is larger than the sum of its proper divisors (1).

67799491 is an equidigital number, since it uses as much as digits as its factorization.

67799491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 67799491 is about 8234.0446318926. The cubic root of 67799491 is about 407.7639345513.

The spelling of 67799491 in words is "sixty-seven million, seven hundred ninety-nine thousand, four hundred ninety-one".