163040866 has 16 divisors (see below), whose sum is σ = 248686200. Its totient is φ = 80156800.

The previous prime is 163040849. The next prime is 163040869. The reversal of 163040866 is 668040361.

It can be written as a sum of positive squares in 4 ways, for example, as 116186841 + 46854025 = 10779^2 + 6845^2 .

It is not an unprimeable number, because it can be changed into a prime (163040869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27390 + ... + 32806.

Almost surely, 2^163040866 is an apocalyptic number.

163040866 is a deficient number, since it is larger than the sum of its proper divisors (85645334).

163040866 is a wasteful number, since it uses less digits than its factorization.

163040866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 163040866 is about 12768.7456705817. The cubic root of 163040866 is about 546.3012041921.

The spelling of 163040866 in words is "one hundred sixty-three million, forty thousand, eight hundred sixty-six".