90742867 has 2 divisors, whose sum is σ = 90742868. Its totient is φ = 90742866.

The previous prime is 90742831. The next prime is 90742877. The reversal of 90742867 is 76824709.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90742867 - 2⁷ = 90742739 is a prime.

It is a super-2 number, since 2×90742867² = 16468535822759378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90742877) 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, 45371433 + 45371434.

It is an arithmetic number, because the mean of its divisors is an integer number (45371434).

Almost surely, 2^90742867 is an apocalyptic number.

90742867 is a deficient number, since it is larger than the sum of its proper divisors (1).

90742867 is an equidigital number, since it uses as much as digits as its factorization.

90742867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 90742867 is about 9525.9050488654. The cubic root of 90742867 is about 449.3700931578.

The spelling of 90742867 in words is "ninety million, seven hundred forty-two thousand, eight hundred sixty-seven".