90699208 has 8 divisors (see below), whose sum is σ = 170061030. Its totient is φ = 45349600.

The previous prime is 90699197. The next prime is 90699239. The reversal of 90699208 is 80299609.

It can be written as a sum of positive squares in only one way, i.e., 90212004 + 487204 = 9498^2 + 698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5668693 + ... + 5668708.

Almost surely, 2^90699208 is an apocalyptic number.

It is an amenable number.

90699208 is a deficient number, since it is larger than the sum of its proper divisors (79361822).

90699208 is a wasteful number, since it uses less digits than its factorization.

90699208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11337407 (or 11337403 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 90699208 is about 9523.6131798808. The cubic root of 90699208 is about 449.2980133099.

The spelling of 90699208 in words is "ninety million, six hundred ninety-nine thousand, two hundred eight".