106565399 has 2 divisors, whose sum is σ = 106565400. Its totient is φ = 106565398.

The previous prime is 106565369. The next prime is 106565419. The reversal of 106565399 is 993565601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106565399 is a prime.

It is a super-2 number, since 2×106565399² = 22712368528058402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106565369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53282699 + 53282700.

It is an arithmetic number, because the mean of its divisors is an integer number (53282700).

Almost surely, 2^106565399 is an apocalyptic number.

106565399 is a deficient number, since it is larger than the sum of its proper divisors (1).

106565399 is an equidigital number, since it uses as much as digits as its factorization.

106565399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 106565399 is about 10323.0518258895. The cubic root of 106565399 is about 474.1023104593.

The spelling of 106565399 in words is "one hundred six million, five hundred sixty-five thousand, three hundred ninety-nine".