164666461 has 4 divisors (see below), whose sum is σ = 166296924. Its totient is φ = 163036000.

The previous prime is 164666449. The next prime is 164666501.

164666461 is nontrivially palindromic in base 10.

164666461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139476100 + 25190361 = 11810^2 + 5019^2 .

It is a cyclic number.

It is not a de Polignac number, because 164666461 - 2⁵ = 164666429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164666561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 815080 + ... + 815281.

It is an arithmetic number, because the mean of its divisors is an integer number (41574231).

Almost surely, 2^164666461 is an apocalyptic number.

It is an amenable number.

164666461 is a deficient number, since it is larger than the sum of its proper divisors (1630463).

164666461 is a wasteful number, since it uses less digits than its factorization.

164666461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630462.

The product of its digits is 124416, while the sum is 40.

The square root of 164666461 is about 12832.2430229481. The cubic root of 164666461 is about 548.1108308077.

The spelling of 164666461 in words is "one hundred sixty-four million, six hundred sixty-six thousand, four hundred sixty-one".