916666 has 4 divisors (see below), whose sum is σ = 1375002. Its totient is φ = 458332.

The previous prime is 916651. The next prime is 916679. The reversal of 916666 is 666619.

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., 461041 + 455625 = 679^2 + 675^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229165 + ... + 229168.

2⁹¹⁶⁶⁶⁶ is an apocalyptic number.

916666 is a deficient number, since it is larger than the sum of its proper divisors (458336).

916666 is a wasteful number, since it uses less digits than its factorization.

916666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458335.

The product of its digits is 11664, while the sum is 34.

The square root of 916666 is about 957.4267596010. The cubic root of 916666 is about 97.1412545048.

Subtracting from 916666 its reverse (666619), we obtain a cube (250047 = 63³).

It can be divided in two parts, 91 and 6666, that multiplied together give a palindrome (606606).

The spelling of 916666 in words is "nine hundred sixteen thousand, six hundred sixty-six".