90248687 has 2 divisors, whose sum is σ = 90248688. Its totient is φ = 90248686.

The previous prime is 90248681. The next prime is 90248723. The reversal of 90248687 is 78684209.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90248687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90248681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45124343 + 45124344.

It is an arithmetic number, because the mean of its divisors is an integer number (45124344).

Almost surely, 2^90248687 is an apocalyptic number.

90248687 is a deficient number, since it is larger than the sum of its proper divisors (1).

90248687 is an equidigital number, since it uses as much as digits as its factorization.

90248687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 90248687 is about 9499.9308944855. The cubic root of 90248687 is about 448.5528606486.

The spelling of 90248687 in words is "ninety million, two hundred forty-eight thousand, six hundred eighty-seven".