1145666 has 4 divisors (see below), whose sum is σ = 1718502. Its totient is φ = 572832.

The previous prime is 1145659. The next prime is 1145689. The reversal of 1145666 is 6665411.

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., 874225 + 271441 = 935^2 + 521^2 .

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286415 + ... + 286418.

2^1145666 is an apocalyptic number.

1145666 is a deficient number, since it is larger than the sum of its proper divisors (572836).

1145666 is an equidigital number, since it uses as much as digits as its factorization.

1145666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572835.

The product of its digits is 4320, while the sum is 29.

The square root of 1145666 is about 1070.3578840743. The cubic root of 1145666 is about 104.6371755302.

The spelling of 1145666 in words is "one million, one hundred forty-five thousand, six hundred sixty-six".