4061661 has 4 divisors (see below), whose sum is σ = 5415552. Its totient is φ = 2707772.

The previous prime is 4061641. The next prime is 4061663. The reversal of 4061661 is 1661604.

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 not a de Polignac number, because 4061661 - 2⁹ = 4061149 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4061663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676941 + ... + 676946.

It is an arithmetic number, because the mean of its divisors is an integer number (1353888).

Almost surely, 2^4061661 is an apocalyptic number.

It is an amenable number.

4061661 is a deficient number, since it is larger than the sum of its proper divisors (1353891).

4061661 is a wasteful number, since it uses less digits than its factorization.

4061661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353890.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 4061661 is about 2015.3562960430. The cubic root of 4061661 is about 159.5516222617.

The spelling of 4061661 in words is "four million, sixty-one thousand, six hundred sixty-one".