916861 has 8 divisors (see below), whose sum is σ = 1059264. Its totient is φ = 784320.

The previous prime is 916859. The next prime is 916871. The reversal of 916861 is 168619.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 916861 - 2¹ = 916859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2265 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (132408).

2⁹¹⁶⁸⁶¹ is an apocalyptic number.

It is an amenable number.

916861 is a deficient number, since it is larger than the sum of its proper divisors (142403).

916861 is a wasteful number, since it uses less digits than its factorization.

916861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931.

The product of its digits is 2592, while the sum is 31.

The square root of 916861 is about 957.5285896515. The cubic root of 916861 is about 97.1481422195.

It can be divided in two parts, 9168 and 61, that added together give a palindrome (9229).

The spelling of 916861 in words is "nine hundred sixteen thousand, eight hundred sixty-one".