4051666 has 4 divisors (see below), whose sum is σ = 6077502. Its totient is φ = 2025832.

The previous prime is 4051633. The next prime is 4051667. The reversal of 4051666 is 6661504.

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

It can be written as a sum of positive squares in only one way, i.e., 3721041 + 330625 = 1929^2 + 575^2 .

It is not an unprimeable number, because it can be changed into a prime (4051667) 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 as a sum of consecutive naturals, namely, 1012915 + ... + 1012918.

Almost surely, 2^4051666 is an apocalyptic number.

4051666 is a deficient number, since it is larger than the sum of its proper divisors (2025836).

4051666 is a wasteful number, since it uses less digits than its factorization.

4051666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025835.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 4051666 is about 2012.8750582190. The cubic root of 4051666 is about 159.4206390376.

The spelling of 4051666 in words is "four million, fifty-one thousand, six hundred sixty-six".