90918650 has 12 divisors (see below), whose sum is σ = 169108782. Its totient is φ = 36367440.

The previous prime is 90918647. The next prime is 90918671. The reversal of 90918650 is 5681909.

It can be written as a sum of positive squares in 3 ways, for example, as 46389721 + 44528929 = 6811^2 + 6673^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 909137 + ... + 909236.

Almost surely, 2^90918650 is an apocalyptic number.

90918650 is a deficient number, since it is larger than the sum of its proper divisors (78190132).

90918650 is a wasteful number, since it uses less digits than its factorization.

90918650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818385 (or 1818380 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 90918650 is about 9535.1271622354. The cubic root of 90918650 is about 449.6600725034.

The spelling of 90918650 in words is "ninety million, nine hundred eighteen thousand, six hundred fifty".