90918706 has 4 divisors (see below), whose sum is σ = 136378062. Its totient is φ = 45459352.

The previous prime is 90918671. The next prime is 90918713. The reversal of 90918706 is 60781909.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80838081 + 10080625 = 8991^2 + 3175^2 .

It is a super-2 number, since 2×90918706² = 16532422201428872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22729675 + ... + 22729678.

Almost surely, 2^90918706 is an apocalyptic number.

90918706 is a deficient number, since it is larger than the sum of its proper divisors (45459356).

90918706 is a wasteful number, since it uses less digits than its factorization.

90918706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45459355.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 90918706 is about 9535.1300987454. The cubic root of 90918706 is about 449.6601648239.

The spelling of 90918706 in words is "ninety million, nine hundred eighteen thousand, seven hundred six".