90766709 has 16 divisors (see below), whose sum is σ = 101523456. Its totient is φ = 80454000.

The previous prime is 90766693. The next prime is 90766727.

90766709 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 90766709 - 2⁴ = 90766693 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 90766709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90766789) 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 15 ways as a sum of consecutive naturals, for example, 78284 + ... + 79434.

It is an arithmetic number, because the mean of its divisors is an integer number (6345216).

Almost surely, 2^90766709 is an apocalyptic number.

It is an amenable number.

90766709 is a deficient number, since it is larger than the sum of its proper divisors (10756747).

90766709 is a wasteful number, since it uses less digits than its factorization.

90766709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 90766709 is about 9527.1563963231. The cubic root of 90766709 is about 449.4094459060.

The spelling of 90766709 in words is "ninety million, seven hundred sixty-six thousand, seven hundred nine".