215466413 has 2 divisors, whose sum is σ = 215466414. Its totient is φ = 215466412.

The previous prime is 215466401. The next prime is 215466437. The reversal of 215466413 is 314664512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149499529 + 65966884 = 12227^2 + 8122^2 .

It is a cyclic number.

It is not a de Polignac number, because 215466413 - 2⁸ = 215466157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215466413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215466443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107733206 + 107733207.

It is an arithmetic number, because the mean of its divisors is an integer number (107733207).

Almost surely, 2^215466413 is an apocalyptic number.

It is an amenable number.

215466413 is a deficient number, since it is larger than the sum of its proper divisors (1).

215466413 is an equidigital number, since it uses as much as digits as its factorization.

215466413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 215466413 is about 14678.7742335660. The cubic root of 215466413 is about 599.5055305749.

The spelling of 215466413 in words is "two hundred fifteen million, four hundred sixty-six thousand, four hundred thirteen".