36085991 has 2 divisors, whose sum is σ = 36085992. Its totient is φ = 36085990.

The previous prime is 36085981. The next prime is 36086021. The reversal of 36085991 is 19958063.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36085991 - 2¹⁰ = 36084967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36085961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18042995 + 18042996.

It is an arithmetic number, because the mean of its divisors is an integer number (18042996).

Almost surely, 2^36085991 is an apocalyptic number.

36085991 is a deficient number, since it is larger than the sum of its proper divisors (1).

36085991 is an equidigital number, since it uses as much as digits as its factorization.

36085991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 36085991 is about 6007.1616425730. The cubic root of 36085991 is about 330.4554195673.

The spelling of 36085991 in words is "thirty-six million, eighty-five thousand, nine hundred ninety-one".