2900666 has 4 divisors (see below), whose sum is σ = 4351002. Its totient is φ = 1450332.

The previous prime is 2900647. The next prime is 2900669. The reversal of 2900666 is 6660092.

It is a happy number.

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., 1745041 + 1155625 = 1321^2 + 1075^2 .

It is not an unprimeable number, because it can be changed into a prime (2900669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725165 + ... + 725168.

2^2900666 is an apocalyptic number.

2900666 is a deficient number, since it is larger than the sum of its proper divisors (1450336).

2900666 is a wasteful number, since it uses less digits than its factorization.

2900666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450335.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2900666 is about 1703.1341697001. The cubic root of 2900666 is about 142.6152304848.

The spelling of 2900666 in words is "two million, nine hundred thousand, six hundred sixty-six".