36566993 has 4 divisors (see below), whose sum is σ = 36902580. Its totient is φ = 36231408.

The previous prime is 36566977. The next prime is 36567007. The reversal of 36566993 is 39966563.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25331089 + 11235904 = 5033^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 36566993 - 2⁴ = 36566977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36566903) 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, 167630 + ... + 167847.

It is an arithmetic number, because the mean of its divisors is an integer number (9225645).

Almost surely, 2^36566993 is an apocalyptic number.

It is an amenable number.

36566993 is a deficient number, since it is larger than the sum of its proper divisors (335587).

36566993 is a wasteful number, since it uses less digits than its factorization.

36566993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335586.

The product of its digits is 787320, while the sum is 47.

The square root of 36566993 is about 6047.0648251859. The cubic root of 36566993 is about 331.9171933852.

The spelling of 36566993 in words is "thirty-six million, five hundred sixty-six thousand, nine hundred ninety-three".