90671233 has 2 divisors, whose sum is σ = 90671234. Its totient is φ = 90671232.

The previous prime is 90671177. The next prime is 90671237. The reversal of 90671233 is 33217609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76177984 + 14493249 = 8728^2 + 3807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90671233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90671195 and 90671204.

It is not a weakly prime, because it can be changed into another prime (90671237) 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 as a sum of consecutive naturals, namely, 45335616 + 45335617.

It is an arithmetic number, because the mean of its divisors is an integer number (45335617).

Almost surely, 2^90671233 is an apocalyptic number.

It is an amenable number.

90671233 is a deficient number, since it is larger than the sum of its proper divisors (1).

90671233 is an equidigital number, since it uses as much as digits as its factorization.

90671233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 90671233 is about 9522.1443488324. The cubic root of 90671233 is about 449.2518151689.

The spelling of 90671233 in words is "ninety million, six hundred seventy-one thousand, two hundred thirty-three".