36033661 has 4 divisors (see below), whose sum is σ = 36232924. Its totient is φ = 35834400.

The previous prime is 36033649. The next prime is 36033667. The reversal of 36033661 is 16633063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16633063 = 127 ⋅130969.

It can be written as a sum of positive squares in 2 ways, for example, as 105625 + 35928036 = 325^2 + 5994^2 .

It is a cyclic number.

It is not a de Polignac number, because 36033661 - 2¹¹ = 36031613 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 (36033667) 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, 99360 + ... + 99721.

It is an arithmetic number, because the mean of its divisors is an integer number (9058231).

Almost surely, 2^36033661 is an apocalyptic number.

It is an amenable number.

36033661 is a deficient number, since it is larger than the sum of its proper divisors (199263).

36033661 is a wasteful number, since it uses less digits than its factorization.

36033661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199262.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 36033661 is about 6002.8044279320. The cubic root of 36033661 is about 330.2956059538.

The spelling of 36033661 in words is "thirty-six million, thirty-three thousand, six hundred sixty-one".