1245666 has 16 divisors (see below), whose sum is σ = 2577600. Its totient is φ = 400848.

The previous prime is 1245649. The next prime is 1245683. The reversal of 1245666 is 6665421.

It is an interprime number because it is at equal distance from previous prime (1245649) and next prime (1245683).

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3406 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (161100).

2^1245666 is an apocalyptic number.

1245666 is an abundant number, since it is smaller than the sum of its proper divisors (1331934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245666 is a wasteful number, since it uses less digits than its factorization.

1245666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193.

The product of its digits is 8640, while the sum is 30.

The square root of 1245666 is about 1116.0940820558. The cubic root of 1245666 is about 107.5970927385.

The spelling of 1245666 in words is "one million, two hundred forty-five thousand, six hundred sixty-six".