90662387 has 2 divisors, whose sum is σ = 90662388. Its totient is φ = 90662386.

The previous prime is 90662371. The next prime is 90662401. The reversal of 90662387 is 78326609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90662387 - 2⁴ = 90662371 is a prime.

It is not a weakly prime, because it can be changed into another prime (90661387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45331193 + 45331194.

It is an arithmetic number, because the mean of its divisors is an integer number (45331194).

Almost surely, 2^90662387 is an apocalyptic number.

90662387 is a deficient number, since it is larger than the sum of its proper divisors (1).

90662387 is an equidigital number, since it uses as much as digits as its factorization.

90662387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 90662387 is about 9521.6798412885. The cubic root of 90662387 is about 449.2372048356.

The spelling of 90662387 in words is "ninety million, six hundred sixty-two thousand, three hundred eighty-seven".