916668 has 18 divisors (see below), whose sum is σ = 2317224. Its totient is φ = 305544.

The previous prime is 916651. The next prime is 916679. The reversal of 916668 is 866619.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 25463 = 916668 / (9 + 1 + 6 + 6 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12696 + ... + 12767.

2⁹¹⁶⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

916668 is an abundant number, since it is smaller than the sum of its proper divisors (1400556).

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

916668 is a wasteful number, since it uses less digits than its factorization.

916668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25473 (or 25468 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 916668 is about 957.4278040667. The cubic root of 916668 is about 97.1413251530.

The spelling of 916668 in words is "nine hundred sixteen thousand, six hundred sixty-eight".