2345666 has 4 divisors (see below), whose sum is σ = 3518502. Its totient is φ = 1172832.

The previous prime is 2345659. The next prime is 2345669. The reversal of 2345666 is 6665432.

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 + 600625 = 1321^2 + 775^2 .

It is a d-powerful number, because it can be written as 2¹¹ + 3¹² + 4 + 5⁷ + 6⁵ + 6⁶ + 6⁸ .

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2345669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586415 + ... + 586418.

2^2345666 is an apocalyptic number.

2345666 is a deficient number, since it is larger than the sum of its proper divisors (1172836).

2345666 is a wasteful number, since it uses less digits than its factorization.

2345666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172835.

The product of its digits is 25920, while the sum is 32.

The square root of 2345666 is about 1531.5567243821. The cubic root of 2345666 is about 132.8685078012.

The spelling of 2345666 in words is "two million, three hundred forty-five thousand, six hundred sixty-six".