406565113 has 2 divisors, whose sum is σ = 406565114. Its totient is φ = 406565112.

The previous prime is 406565111. The next prime is 406565119. The reversal of 406565113 is 311565604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404693689 + 1871424 = 20117^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 406565113 - 2¹ = 406565111 is a prime.

It is a super-2 number, since 2×406565113² = 330590382217405538, which contains 22 as substring.

Together with 406565111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (406565111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203282556 + 203282557.

It is an arithmetic number, because the mean of its divisors is an integer number (203282557).

Almost surely, 2^406565113 is an apocalyptic number.

It is an amenable number.

406565113 is a deficient number, since it is larger than the sum of its proper divisors (1).

406565113 is an equidigital number, since it uses as much as digits as its factorization.

406565113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 406565113 is about 20163.4598469608. The cubic root of 406565113 is about 740.8154591042.

The spelling of 406565113 in words is "four hundred six million, five hundred sixty-five thousand, one hundred thirteen".