916651 has 2 divisors, whose sum is σ = 916652. Its totient is φ = 916650.

The previous prime is 916649. The next prime is 916679. The reversal of 916651 is 156619.

It is an a-pointer prime, because the next prime (916679) can be obtained adding 916651 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (156619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 916651 - 2¹ = 916649 is a prime.

Together with 916649, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (916621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458325 + 458326.

It is an arithmetic number, because the mean of its divisors is an integer number (458326).

2⁹¹⁶⁶⁵¹ is an apocalyptic number.

916651 is a deficient number, since it is larger than the sum of its proper divisors (1).

916651 is an equidigital number, since it uses as much as digits as its factorization.

916651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 916651 is about 957.4189260715. The cubic root of 916651 is about 97.1407246401.

The spelling of 916651 in words is "nine hundred sixteen thousand, six hundred fifty-one".