2047666 has 4 divisors (see below), whose sum is σ = 3071502. Its totient is φ = 1023832.

The previous prime is 2047651. The next prime is 2047699. The reversal of 2047666 is 6667402.

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., 2042041 + 5625 = 1429^2 + 75^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511915 + ... + 511918.

2^2047666 is an apocalyptic number.

2047666 is a deficient number, since it is larger than the sum of its proper divisors (1023836).

2047666 is a wasteful number, since it uses less digits than its factorization.

2047666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023835.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 2047666 is about 1430.9668060441. The cubic root of 2047666 is about 126.9851802411.

The spelling of 2047666 in words is "two million, forty-seven thousand, six hundred sixty-six".