166464653 has 4 divisors (see below), whose sum is σ = 170335968. Its totient is φ = 162593340.

The previous prime is 166464631. The next prime is 166464667. The reversal of 166464653 is 356464661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166464653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166464653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166464673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935593 + ... + 1935678.

It is an arithmetic number, because the mean of its divisors is an integer number (42583992).

Almost surely, 2^166464653 is an apocalyptic number.

It is an amenable number.

166464653 is a deficient number, since it is larger than the sum of its proper divisors (3871315).

166464653 is an equidigital number, since it uses as much as digits as its factorization.

166464653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871314.

The product of its digits is 311040, while the sum is 41.

The square root of 166464653 is about 12902.1181594341. The cubic root of 166464653 is about 550.0987734450.

The spelling of 166464653 in words is "one hundred sixty-six million, four hundred sixty-four thousand, six hundred fifty-three".