90637307 has 2 divisors, whose sum is σ = 90637308. Its totient is φ = 90637306.

The previous prime is 90637247. The next prime is 90637369. The reversal of 90637307 is 70373609.

It is a weak prime.

It is an emirp because it is prime and its reverse (70373609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90637307 - 2⁶ = 90637243 is a prime.

It is not a weakly prime, because it can be changed into another prime (90637207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45318653 + 45318654.

It is an arithmetic number, because the mean of its divisors is an integer number (45318654).

Almost surely, 2^90637307 is an apocalyptic number.

90637307 is a deficient number, since it is larger than the sum of its proper divisors (1).

90637307 is an equidigital number, since it uses as much as digits as its factorization.

90637307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 90637307 is about 9520.3627556937. The cubic root of 90637307 is about 449.1957767471.

The spelling of 90637307 in words is "ninety million, six hundred thirty-seven thousand, three hundred seven".