90608783 has 4 divisors (see below), whose sum is σ = 92716008. Its totient is φ = 88501560.

The previous prime is 90608779. The next prime is 90608797. The reversal of 90608783 is 38780609.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90608783 - 2² = 90608779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90608783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90608743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053548 + ... + 1053633.

It is an arithmetic number, because the mean of its divisors is an integer number (23179002).

Almost surely, 2^90608783 is an apocalyptic number.

90608783 is a deficient number, since it is larger than the sum of its proper divisors (2107225).

90608783 is a wasteful number, since it uses less digits than its factorization.

90608783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107224.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 90608783 is about 9518.8645856531. The cubic root of 90608783 is about 449.1486504401.

The spelling of 90608783 in words is "ninety million, six hundred eight thousand, seven hundred eighty-three".