90797817 has 8 divisors (see below), whose sum is σ = 132069600. Its totient is φ = 55028960.

The previous prime is 90797807. The next prime is 90797831. The reversal of 90797817 is 71879709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90797817 - 2⁴ = 90797801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90797807) 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 in 7 ways as a sum of consecutive naturals, for example, 1375692 + ... + 1375757.

It is an arithmetic number, because the mean of its divisors is an integer number (16508700).

Almost surely, 2^90797817 is an apocalyptic number.

It is an amenable number.

90797817 is a deficient number, since it is larger than the sum of its proper divisors (41271783).

90797817 is a wasteful number, since it uses less digits than its factorization.

90797817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751463.

The product of its (nonzero) digits is 222264, while the sum is 48.

The square root of 90797817 is about 9528.7888527346. The cubic root of 90797817 is about 449.4607812923.

The spelling of 90797817 in words is "ninety million, seven hundred ninety-seven thousand, eight hundred seventeen".