90313668 has 54 divisors (see below), whose sum is σ = 231869274. Its totient is φ = 29637888.

The previous prime is 90313661. The next prime is 90313687. The reversal of 90313668 is 86631309.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11778624 + 78535044 = 3432^2 + 8862^2 .

It is a super-2 number, since 2×90313668² = 16313117255228448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90313661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 606058 + ... + 606206.

Almost surely, 2^90313668 is an apocalyptic number.

It is an amenable number.

90313668 is an abundant number, since it is smaller than the sum of its proper divisors (141555606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90313668 is a wasteful number, since it uses less digits than its factorization.

90313668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 90313668 is about 9503.3503565848. The cubic root of 90313668 is about 448.6604907302.

The spelling of 90313668 in words is "ninety million, three hundred thirteen thousand, six hundred sixty-eight".