166063965 has 16 divisors (see below), whose sum is σ = 267297408. Its totient is φ = 88035776.

The previous prime is 166063957. The next prime is 166063969. The reversal of 166063965 is 569360661.

It is a cyclic number.

It is not a de Polignac number, because 166063965 - 2³ = 166063957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166063969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30642 + ... + 35651.

It is an arithmetic number, because the mean of its divisors is an integer number (16706088).

Almost surely, 2^166063965 is an apocalyptic number.

166063965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166063965 is a deficient number, since it is larger than the sum of its proper divisors (101233443).

166063965 is a wasteful number, since it uses less digits than its factorization.

166063965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66468.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 166063965 is about 12886.5808110608. The cubic root of 166063965 is about 549.6570479049.

The spelling of 166063965 in words is "one hundred sixty-six million, sixty-three thousand, nine hundred sixty-five".