36668693 has 6 divisors (see below), whose sum is σ = 38332854. Its totient is φ = 35073896.

The previous prime is 36668683. The next prime is 36668699. The reversal of 36668693 is 39686663.

It can be written as a sum of positive squares in only one way, i.e., 30724849 + 5943844 = 5543^2 + 2438^2 .

It is not a de Polignac number, because 36668693 - 2¹⁰ = 36667669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36668699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34130 + ... + 35187.

It is an arithmetic number, because the mean of its divisors is an integer number (6388809).

Almost surely, 2^36668693 is an apocalyptic number.

It is an amenable number.

36668693 is a deficient number, since it is larger than the sum of its proper divisors (1664161).

36668693 is an equidigital number, since it uses as much as digits as its factorization.

36668693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69363 (or 69340 counting only the distinct ones).

The product of its digits is 839808, while the sum is 47.

The square root of 36668693 is about 6055.4680248516. The cubic root of 36668693 is about 332.2246175589.

The spelling of 36668693 in words is "thirty-six million, six hundred sixty-eight thousand, six hundred ninety-three".