90737617 has 2 divisors, whose sum is σ = 90737618. Its totient is φ = 90737616.

The previous prime is 90737593. The next prime is 90737629. The reversal of 90737617 is 71673709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76720081 + 14017536 = 8759^2 + 3744^2 .

It is a cyclic number.

It is not a de Polignac number, because 90737617 - 2⁷ = 90737489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90737617.

It is not a weakly prime, because it can be changed into another prime (90737117) 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, 45368808 + 45368809.

It is an arithmetic number, because the mean of its divisors is an integer number (45368809).

Almost surely, 2^90737617 is an apocalyptic number.

It is an amenable number.

90737617 is a deficient number, since it is larger than the sum of its proper divisors (1).

90737617 is an equidigital number, since it uses as much as digits as its factorization.

90737617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 90737617 is about 9525.6294805120. The cubic root of 90737617 is about 449.3614267705.

The spelling of 90737617 in words is "ninety million, seven hundred thirty-seven thousand, six hundred seventeen".