4164661 has 4 divisors (see below), whose sum is σ = 4308300. Its totient is φ = 4021024.

The previous prime is 4164637. The next prime is 4164673. The reversal of 4164661 is 1664614.

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 1425636 + 2739025 = 1194^2 + 1655^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4164661 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 (4164631) 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, 71776 + ... + 71833.

It is an arithmetic number, because the mean of its divisors is an integer number (1077075).

Almost surely, 2^4164661 is an apocalyptic number.

It is an amenable number.

4164661 is a deficient number, since it is larger than the sum of its proper divisors (143639).

4164661 is a wasteful number, since it uses less digits than its factorization.

4164661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143638.

The product of its digits is 3456, while the sum is 28.

The square root of 4164661 is about 2040.7501071910. The cubic root of 4164661 is about 160.8890739587.

The spelling of 4164661 in words is "four million, one hundred sixty-four thousand, six hundred sixty-one".