90767917 has 4 divisors (see below), whose sum is σ = 91037596. Its totient is φ = 90498240.

The previous prime is 90767903. The next prime is 90767923. The reversal of 90767917 is 71976709.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39702601 + 51065316 = 6301^2 + 7146^2 .

It is a cyclic number.

It is not a de Polignac number, because 90767917 - 2¹⁵ = 90735149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90767987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134334 + ... + 135007.

It is an arithmetic number, because the mean of its divisors is an integer number (22759399).

Almost surely, 2^90767917 is an apocalyptic number.

It is an amenable number.

90767917 is a deficient number, since it is larger than the sum of its proper divisors (269679).

90767917 is a wasteful number, since it uses less digits than its factorization.

90767917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269678.

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 90767917 is about 9527.2197938328. The cubic root of 90767917 is about 449.4114396039.

The spelling of 90767917 in words is "ninety million, seven hundred sixty-seven thousand, nine hundred seventeen".