90665066 has 8 divisors (see below), whose sum is σ = 136039620. Its totient is φ = 45318528.

The previous prime is 90665023. The next prime is 90665077. The reversal of 90665066 is 66056609.

It can be written as a sum of positive squares in 2 ways, for example, as 90649441 + 15625 = 9521^2 + 125^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5690 + ... + 14618.

Almost surely, 2^90665066 is an apocalyptic number.

90665066 is a deficient number, since it is larger than the sum of its proper divisors (45374554).

90665066 is a wasteful number, since it uses less digits than its factorization.

90665066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14008.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 90665066 is about 9521.8205192074. The cubic root of 90665066 is about 449.2416296570.

The spelling of 90665066 in words is "ninety million, six hundred sixty-five thousand, sixty-six".