1156666 has 8 divisors (see below), whose sum is σ = 1982880. Its totient is φ = 495708.

The previous prime is 1156643. The next prime is 1156681. The reversal of 1156666 is 6666511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41296 + ... + 41323.

It is an arithmetic number, because the mean of its divisors is an integer number (247860).

2^1156666 is an apocalyptic number.

1156666 is a deficient number, since it is larger than the sum of its proper divisors (826214).

1156666 is an equidigital number, since it uses as much as digits as its factorization.

1156666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82628.

The product of its digits is 6480, while the sum is 31.

The square root of 1156666 is about 1075.4840770555. The cubic root of 1156666 is about 104.9709972807.

It can be divided in two parts, 11 and 56666, that multiplied together give a palindrome (623326).

The spelling of 1156666 in words is "one million, one hundred fifty-six thousand, six hundred sixty-six".