90664250 has 16 divisors (see below), whose sum is σ = 169723944. Its totient is φ = 36265600.

The previous prime is 90664207. The next prime is 90664309. The reversal of 90664250 is 5246609.

It can be written as a sum of positive squares in 4 ways, for example, as 27573001 + 63091249 = 5251^2 + 7943^2 .

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, 181079 + ... + 181578.

Almost surely, 2^90664250 is an apocalyptic number.

90664250 is a deficient number, since it is larger than the sum of its proper divisors (79059694).

90664250 is a wasteful number, since it uses less digits than its factorization.

90664250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362674 (or 362664 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 90664250 is about 9521.7776701622. Note that the first 3 decimals coincide. The cubic root of 90664250 is about 449.2402819043.

It can be divided in two parts, 906 and 64250, that added together give a palindrome (65156).

The spelling of 90664250 in words is "ninety million, six hundred sixty-four thousand, two hundred fifty".