4050661 has 4 divisors (see below), whose sum is σ = 4055392. Its totient is φ = 4045932.

The previous prime is 4050647. The next prime is 4050671. The reversal of 4050661 is 1660504.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4050661 - 2⁹ = 4050149 is a prime.

It is a Duffinian number.

4050661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4050611) 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, 681 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (1013848).

Almost surely, 2^4050661 is an apocalyptic number.

It is an amenable number.

4050661 is a deficient number, since it is larger than the sum of its proper divisors (4731).

4050661 is a wasteful number, since it uses less digits than its factorization.

4050661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 4050661 is about 2012.6253998198. The cubic root of 4050661 is about 159.4074567244.

The spelling of 4050661 in words is "four million, fifty thousand, six hundred sixty-one".