90607771 has 2 divisors, whose sum is σ = 90607772. Its totient is φ = 90607770.

The previous prime is 90607763. The next prime is 90607813. The reversal of 90607771 is 17770609.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90607771 - 2³ = 90607763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90607771.

It is not a weakly prime, because it can be changed into another prime (90607721) 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, 45303885 + 45303886.

It is an arithmetic number, because the mean of its divisors is an integer number (45303886).

Almost surely, 2^90607771 is an apocalyptic number.

90607771 is a deficient number, since it is larger than the sum of its proper divisors (1).

90607771 is an equidigital number, since it uses as much as digits as its factorization.

90607771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 90607771 is about 9518.8114279042. The cubic root of 90607771 is about 449.1469782691.

It can be divided in two parts, 90607 and 771, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 90607771 in words is "ninety million, six hundred seven thousand, seven hundred seventy-one".