90686248 has 16 divisors (see below), whose sum is σ = 175900500. Its totient is φ = 43779456.

The previous prime is 90686243. The next prime is 90686291. The reversal of 90686248 is 84268609.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 89908324 + 777924 = 9482^2 + 882^2 .

It is not an unprimeable number, because it can be changed into a prime (90686243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195213 + ... + 195676.

Almost surely, 2^90686248 is an apocalyptic number.

It is an amenable number.

90686248 is a deficient number, since it is larger than the sum of its proper divisors (85214252).

90686248 is a wasteful number, since it uses less digits than its factorization.

90686248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390924 (or 390920 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 90686248 is about 9522.9327415455. The cubic root of 90686248 is about 449.2766122424.

The spelling of 90686248 in words is "ninety million, six hundred eighty-six thousand, two hundred forty-eight".