36691979 has 2 divisors, whose sum is σ = 36691980. Its totient is φ = 36691978.

The previous prime is 36691961. The next prime is 36691981. The reversal of 36691979 is 97919663.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36691979 - 2¹² = 36687883 is a prime.

Together with 36691981, 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 (36691909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18345989 + 18345990.

It is an arithmetic number, because the mean of its divisors is an integer number (18345990).

Almost surely, 2^36691979 is an apocalyptic number.

36691979 is a deficient number, since it is larger than the sum of its proper divisors (1).

36691979 is an equidigital number, since it uses as much as digits as its factorization.

36691979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 50.

The square root of 36691979 is about 6057.3904447377. The cubic root of 36691979 is about 332.2949277227.

The spelling of 36691979 in words is "thirty-six million, six hundred ninety-one thousand, nine hundred seventy-nine".