36566661 has 8 divisors (see below), whose sum is σ = 49675680. Its totient is φ = 23917712.

The previous prime is 36566653. The next prime is 36566669. The reversal of 36566661 is 16666563.

It is an interprime number because it is at equal distance from previous prime (36566653) and next prime (36566669).

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 36566661 - 2³ = 36566653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36566669) 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, 114831 + ... + 115148.

It is an arithmetic number, because the mean of its divisors is an integer number (6209460).

Almost surely, 2^36566661 is an apocalyptic number.

It is an amenable number.

36566661 is a deficient number, since it is larger than the sum of its proper divisors (13109019).

36566661 is a wasteful number, since it uses less digits than its factorization.

36566661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230035.

The product of its digits is 116640, while the sum is 39.

The square root of 36566661 is about 6047.0373737889. The cubic root of 36566661 is about 331.9161888650.

The spelling of 36566661 in words is "thirty-six million, five hundred sixty-six thousand, six hundred sixty-one".