90697433 has 2 divisors, whose sum is σ = 90697434. Its totient is φ = 90697432.

The previous prime is 90697403. The next prime is 90697493. The reversal of 90697433 is 33479609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52591504 + 38105929 = 7252^2 + 6173^2 .

It is a cyclic number.

It is not a de Polignac number, because 90697433 - 2¹⁶ = 90631897 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (90697403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45348716 + 45348717.

It is an arithmetic number, because the mean of its divisors is an integer number (45348717).

Almost surely, 2^90697433 is an apocalyptic number.

It is an amenable number.

90697433 is a deficient number, since it is larger than the sum of its proper divisors (1).

90697433 is an equidigital number, since it uses as much as digits as its factorization.

90697433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 90697433 is about 9523.5199900037. The cubic root of 90697433 is about 449.2950823428.

The spelling of 90697433 in words is "ninety million, six hundred ninety-seven thousand, four hundred thirty-three".