166534065 has 12 divisors (see below), whose sum is σ = 288659124. Its totient is φ = 88818144.

The previous prime is 166534063. The next prime is 166534073. The reversal of 166534065 is 560435661.

166534065 is a `hidden beast` number, since 1 + 66 + 534 + 0 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57289761 + 109244304 = 7569^2 + 10452^2 .

It is not a de Polignac number, because 166534065 - 2¹ = 166534063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166534063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1850334 + ... + 1850423.

It is an arithmetic number, because the mean of its divisors is an integer number (24054927).

Almost surely, 2^166534065 is an apocalyptic number.

166534065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166534065 is a deficient number, since it is larger than the sum of its proper divisors (122125059).

166534065 is a wasteful number, since it uses less digits than its factorization.

166534065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700768 (or 3700765 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 166534065 is about 12904.8078249930. The cubic root of 166534065 is about 550.1752224075.

The spelling of 166534065 in words is "one hundred sixty-six million, five hundred thirty-four thousand, sixty-five".