90749666 has 12 divisors (see below), whose sum is σ = 158349078. Its totient is φ = 38892672.

The previous prime is 90749657. The next prime is 90749669. The reversal of 90749666 is 66694709.

It can be written as a sum of positive squares in only one way, i.e., 76195441 + 14554225 = 8729^2 + 3815^2 .

It is a super-2 number, since 2×90749666² = 16471003758223112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90749666.

It is not an unprimeable number, because it can be changed into a prime (90749669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462911 + ... + 463106.

Almost surely, 2^90749666 is an apocalyptic number.

90749666 is a deficient number, since it is larger than the sum of its proper divisors (67599412).

90749666 is a wasteful number, since it uses less digits than its factorization.

90749666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926033 (or 926026 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 90749666 is about 9526.2619111591. The cubic root of 90749666 is about 449.3813160453.

The spelling of 90749666 in words is "ninety million, seven hundred forty-nine thousand, six hundred sixty-six".