90216701 has 2 divisors, whose sum is σ = 90216702. Its totient is φ = 90216700.

The previous prime is 90216697. The next prime is 90216761. The reversal of 90216701 is 10761209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59691076 + 30525625 = 7726^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 90216701 - 2² = 90216697 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90216761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45108350 + 45108351.

It is an arithmetic number, because the mean of its divisors is an integer number (45108351).

Almost surely, 2^90216701 is an apocalyptic number.

It is an amenable number.

90216701 is a deficient number, since it is larger than the sum of its proper divisors (1).

90216701 is an equidigital number, since it uses as much as digits as its factorization.

90216701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 90216701 is about 9498.2472593632. The cubic root of 90216701 is about 448.4998622519.

The spelling of 90216701 in words is "ninety million, two hundred sixteen thousand, seven hundred one".