90297607 has 2 divisors, whose sum is σ = 90297608. Its totient is φ = 90297606.

The previous prime is 90297601. The next prime is 90297611. The reversal of 90297607 is 70679209.

It is a strong prime.

It is an emirp because it is prime and its reverse (70679209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90297607 - 2⁷ = 90297479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90297607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90297601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45148803 + 45148804.

It is an arithmetic number, because the mean of its divisors is an integer number (45148804).

Almost surely, 2^90297607 is an apocalyptic number.

90297607 is a deficient number, since it is larger than the sum of its proper divisors (1).

90297607 is an equidigital number, since it uses as much as digits as its factorization.

90297607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 90297607 is about 9502.5053012350. The cubic root of 90297607 is about 448.6338931933.

The spelling of 90297607 in words is "ninety million, two hundred ninety-seven thousand, six hundred seven".