97766413 has 2 divisors, whose sum is σ = 97766414. Its totient is φ = 97766412.

The previous prime is 97766407. The next prime is 97766423. The reversal of 97766413 is 31466779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90573289 + 7193124 = 9517^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 97766413 - 2⁹ = 97765901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97766413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97766423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48883206 + 48883207.

It is an arithmetic number, because the mean of its divisors is an integer number (48883207).

Almost surely, 2^97766413 is an apocalyptic number.

It is an amenable number.

97766413 is a deficient number, since it is larger than the sum of its proper divisors (1).

97766413 is an equidigital number, since it uses as much as digits as its factorization.

97766413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 43.

The square root of 97766413 is about 9887.6899728905. The cubic root of 97766413 is about 460.6770323491.

The spelling of 97766413 in words is "ninety-seven million, seven hundred sixty-six thousand, four hundred thirteen".