90610859 has 2 divisors, whose sum is σ = 90610860. Its totient is φ = 90610858.

The previous prime is 90610853. The next prime is 90610873. The reversal of 90610859 is 95801609.

It is a weak prime.

It is an emirp because it is prime and its reverse (95801609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90610859 - 2⁸ = 90610603 is a prime.

It is not a weakly prime, because it can be changed into another prime (90610853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45305429 + 45305430.

It is an arithmetic number, because the mean of its divisors is an integer number (45305430).

Almost surely, 2^90610859 is an apocalyptic number.

90610859 is a deficient number, since it is larger than the sum of its proper divisors (1).

90610859 is an equidigital number, since it uses as much as digits as its factorization.

90610859 is an odious number, because the sum of its binary digits is odd.

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

The square root of 90610859 is about 9518.9736316475. The cubic root of 90610859 is about 449.1520806649.

The spelling of 90610859 in words is "ninety million, six hundred ten thousand, eight hundred fifty-nine".