90668723 has 2 divisors, whose sum is σ = 90668724. Its totient is φ = 90668722.

The previous prime is 90668717. The next prime is 90668731. The reversal of 90668723 is 32786609.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90668723 - 2¹⁰ = 90667699 is a prime.

It is not a weakly prime, because it can be changed into another prime (90668623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45334361 + 45334362.

It is an arithmetic number, because the mean of its divisors is an integer number (45334362).

Almost surely, 2^90668723 is an apocalyptic number.

90668723 is a deficient number, since it is larger than the sum of its proper divisors (1).

90668723 is an equidigital number, since it uses as much as digits as its factorization.

90668723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 90668723 is about 9522.0125498762. The cubic root of 90668723 is about 449.2476696701.

The spelling of 90668723 in words is "ninety million, six hundred sixty-eight thousand, seven hundred twenty-three".