90923687 has 2 divisors, whose sum is σ = 90923688. Its totient is φ = 90923686.

The previous prime is 90923681. The next prime is 90923711. The reversal of 90923687 is 78632909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90923687 - 2¹⁴ = 90907303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90923681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45461843 + 45461844.

It is an arithmetic number, because the mean of its divisors is an integer number (45461844).

Almost surely, 2^90923687 is an apocalyptic number.

90923687 is a deficient number, since it is larger than the sum of its proper divisors (1).

90923687 is an equidigital number, since it uses as much as digits as its factorization.

90923687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 90923687 is about 9535.3912871995. The cubic root of 90923687 is about 449.6683762488.

The spelling of 90923687 in words is "ninety million, nine hundred twenty-three thousand, six hundred eighty-seven".