90697 has 2 divisors, whose sum is σ = 90698. Its totient is φ = 90696.

The previous prime is 90679. The next prime is 90703. The reversal of 90697 is 79609.

Together with previous prime (90679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89401 + 1296 = 299^2 + 36^2 .

It is an emirp because it is prime and its reverse (79609) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90697 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 90697.

It is not a weakly prime, because it can be changed into another prime (90617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45348 + 45349.

It is an arithmetic number, because the mean of its divisors is an integer number (45349).

2⁹⁰⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

90697 is a deficient number, since it is larger than the sum of its proper divisors (1).

90697 is an equidigital number, since it uses as much as digits as its factorization.

90697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 90697 is about 301.1594262181. The cubic root of 90697 is about 44.9294367346.

It can be divided in two parts, 90 and 697, that added together give a palindrome (787).

The spelling of 90697 in words is "ninety thousand, six hundred ninety-seven".