90262637 has 2 divisors, whose sum is σ = 90262638. Its totient is φ = 90262636.

The previous prime is 90262631. The next prime is 90262661. The reversal of 90262637 is 73626209.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81613156 + 8649481 = 9034^2 + 2941^2 .

It is a cyclic number.

It is not a de Polignac number, because 90262637 - 2⁴ = 90262621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90262597 and 90262606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90262631) 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, 45131318 + 45131319.

It is an arithmetic number, because the mean of its divisors is an integer number (45131319).

Almost surely, 2^90262637 is an apocalyptic number.

It is an amenable number.

90262637 is a deficient number, since it is larger than the sum of its proper divisors (1).

90262637 is an equidigital number, since it uses as much as digits as its factorization.

90262637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 90262637 is about 9500.6650819824. The cubic root of 90262637 is about 448.5759708279.

The spelling of 90262637 in words is "ninety million, two hundred sixty-two thousand, six hundred thirty-seven".