90699970 has 16 divisors (see below), whose sum is σ = 163369080. Its totient is φ = 36255744.

The previous prime is 90699967. The next prime is 90699991. The reversal of 90699970 is 7999609.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 75637809 + 15062161 = 8697^2 + 3881^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25204 + ... + 28576.

Almost surely, 2^90699970 is an apocalyptic number.

90699970 is a deficient number, since it is larger than the sum of its proper divisors (72669110).

90699970 is a wasteful number, since it uses less digits than its factorization.

90699970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 90699970 is about 9523.6531856216. The cubic root of 90699970 is about 449.2992715499.

The spelling of 90699970 in words is "ninety million, six hundred ninety-nine thousand, nine hundred seventy".