4163661 has 6 divisors (see below), whose sum is σ = 6014190. Its totient is φ = 2775768.

The previous prime is 4163659. The next prime is 4163669. The reversal of 4163661 is 1663614.

It can be written as a sum of positive squares in only one way, i.e., 2499561 + 1664100 = 1581^2 + 1290^2 .

It is not a de Polignac number, because 4163661 - 2¹ = 4163659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4163669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231306 + ... + 231323.

It is an arithmetic number, because the mean of its divisors is an integer number (1002365).

Almost surely, 2^4163661 is an apocalyptic number.

It is an amenable number.

4163661 is a deficient number, since it is larger than the sum of its proper divisors (1850529).

4163661 is a wasteful number, since it uses less digits than its factorization.

4163661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462635 (or 462632 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 4163661 is about 2040.5050845318. The cubic root of 4163661 is about 160.8761956033.

The spelling of 4163661 in words is "four million, one hundred sixty-three thousand, six hundred sixty-one".