1566163 has 2 divisors, whose sum is σ = 1566164. Its totient is φ = 1566162.

The previous prime is 1566143. The next prime is 1566179. The reversal of 1566163 is 3616651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1566163 - 2⁹ = 1565651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1566143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 783081 + 783082.

It is an arithmetic number, because the mean of its divisors is an integer number (783082).

2^1566163 is an apocalyptic number.

1566163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1566163 is an equidigital number, since it uses as much as digits as its factorization.

1566163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 1566163 is about 1251.4643422807. The cubic root of 1566163 is about 116.1303281524.

The spelling of 1566163 in words is "one million, five hundred sixty-six thousand, one hundred sixty-three".