36768691 has 4 divisors (see below), whose sum is σ = 36859000. Its totient is φ = 36678384.

The previous prime is 36768689. The next prime is 36768701. The reversal of 36768691 is 19686763.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19686763 = 137 ⋅143699.

It is a cyclic number.

It is not a de Polignac number, because 36768691 - 2¹ = 36768689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36768601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44541 + ... + 45358.

It is an arithmetic number, because the mean of its divisors is an integer number (9214750).

Almost surely, 2^36768691 is an apocalyptic number.

36768691 is a deficient number, since it is larger than the sum of its proper divisors (90309).

36768691 is an equidigital number, since it uses as much as digits as its factorization.

36768691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90308.

The product of its digits is 326592, while the sum is 46.

The square root of 36768691 is about 6063.7192382234. The cubic root of 36768691 is about 332.5263430991.

The spelling of 36768691 in words is "thirty-six million, seven hundred sixty-eight thousand, six hundred ninety-one".