36659891 has 2 divisors, whose sum is σ = 36659892. Its totient is φ = 36659890.

The previous prime is 36659881. The next prime is 36659893. The reversal of 36659891 is 19895663.

It is a strong prime.

It is an emirp because it is prime and its reverse (19895663) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36659891 is a prime.

Together with 36659893, 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 (36659893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18329945 + 18329946.

It is an arithmetic number, because the mean of its divisors is an integer number (18329946).

Almost surely, 2^36659891 is an apocalyptic number.

36659891 is a deficient number, since it is larger than the sum of its proper divisors (1).

36659891 is an equidigital number, since it uses as much as digits as its factorization.

36659891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 36659891 is about 6054.7412000844. The cubic root of 36659891 is about 332.1980328908.

The spelling of 36659891 in words is "thirty-six million, six hundred fifty-nine thousand, eight hundred ninety-one".