89540665 has 8 divisors (see below), whose sum is σ = 107602560. Its totient is φ = 71530032.

The previous prime is 89540651. The next prime is 89540669. The reversal of 89540665 is 56604598.

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 89540665 - 2⁷ = 89540537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89540669) 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, 8859 + ... + 16048.

It is an arithmetic number, because the mean of its divisors is an integer number (13450320).

Almost surely, 2^89540665 is an apocalyptic number.

It is an amenable number.

89540665 is a deficient number, since it is larger than the sum of its proper divisors (18061895).

89540665 is a wasteful number, since it uses less digits than its factorization.

89540665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25631.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 89540665 is about 9462.5929321724. The cubic root of 89540665 is about 447.3767791154.

The spelling of 89540665 in words is "eighty-nine million, five hundred forty thousand, six hundred sixty-five".