36661243 has 8 divisors (see below), whose sum is σ = 37396800. Its totient is φ = 35929608.

The previous prime is 36661237. The next prime is 36661253. The reversal of 36661243 is 34216663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36661243 - 2¹⁷ = 36530171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36661253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23980 + ... + 25462.

It is an arithmetic number, because the mean of its divisors is an integer number (4674600).

Almost surely, 2^36661243 is an apocalyptic number.

36661243 is a deficient number, since it is larger than the sum of its proper divisors (735557).

36661243 is a wasteful number, since it uses less digits than its factorization.

36661243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961.

The product of its digits is 15552, while the sum is 31.

The square root of 36661243 is about 6054.8528470971. The cubic root of 36661243 is about 332.2021166111.

The spelling of 36661243 in words is "thirty-six million, six hundred sixty-one thousand, two hundred forty-three".