90664313 has 2 divisors, whose sum is σ = 90664314. Its totient is φ = 90664312.

The previous prime is 90664309. The next prime is 90664337. The reversal of 90664313 is 31346609.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72114064 + 18550249 = 8492^2 + 4307^2 .

It is a cyclic number.

It is not a de Polignac number, because 90664313 - 2² = 90664309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90664313.

It is not a weakly prime, because it can be changed into another prime (90664913) by changing a digit.

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 as a sum of consecutive naturals, namely, 45332156 + 45332157.

It is an arithmetic number, because the mean of its divisors is an integer number (45332157).

Almost surely, 2^90664313 is an apocalyptic number.

It is an amenable number.

90664313 is a deficient number, since it is larger than the sum of its proper divisors (1).

90664313 is an equidigital number, since it uses as much as digits as its factorization.

90664313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 90664313 is about 9521.7809783674. The cubic root of 90664313 is about 449.2403859590.

The spelling of 90664313 in words is "ninety million, six hundred sixty-four thousand, three hundred thirteen".