90666045 has 12 divisors (see below), whose sum is σ = 157154556. Its totient is φ = 48355200.

The previous prime is 90666029. The next prime is 90666071. The reversal of 90666045 is 54066609.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58890276 + 31775769 = 7674^2 + 5637^2 .

It is not a de Polignac number, because 90666045 - 2⁴ = 90666029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1007356 + ... + 1007445.

It is an arithmetic number, because the mean of its divisors is an integer number (13096213).

Almost surely, 2^90666045 is an apocalyptic number.

It is an amenable number.

90666045 is a deficient number, since it is larger than the sum of its proper divisors (66488511).

90666045 is a wasteful number, since it uses less digits than its factorization.

90666045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014812 (or 2014809 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 90666045 is about 9521.8719273051. The cubic root of 90666045 is about 449.2432466193.

It can be divided in two parts, 9066604 and 5, that added together give a palindrome (9066609).

The spelling of 90666045 in words is "ninety million, six hundred sixty-six thousand, forty-five".