89666655 has 16 divisors (see below), whose sum is σ = 154502880. Its totient is φ = 44143488.

The previous prime is 89666641. The next prime is 89666657. The reversal of 89666655 is 55666698.

It is not a de Polignac number, because 89666655 - 2⁴ = 89666639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89666598 and 89666607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89666657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229720 + ... + 230109.

It is an arithmetic number, because the mean of its divisors is an integer number (9656430).

Almost surely, 2^89666655 is an apocalyptic number.

89666655 is a deficient number, since it is larger than the sum of its proper divisors (64836225).

89666655 is a wasteful number, since it uses less digits than its factorization.

89666655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459850.

The product of its digits is 2332800, while the sum is 51.

The square root of 89666655 is about 9469.2478581987. The cubic root of 89666655 is about 447.5865109527.

The spelling of 89666655 in words is "eighty-nine million, six hundred sixty-six thousand, six hundred fifty-five".