916641 has 24 divisors (see below), whose sum is σ = 1482624. Its totient is φ = 540960.

The previous prime is 916633. The next prime is 916649. The reversal of 916641 is 146619.

916641 is a `hidden beast` number, since 9 + 16 + 641 = 666.

It is an interprime number because it is at equal distance from previous prime (916633) and next prime (916649).

It is not a de Polignac number, because 916641 - 2³ = 916633 is a prime.

916641 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 916641.

It is not an unprimeable number, because it can be changed into a prime (916649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4555 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (61776).

2⁹¹⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

916641 is a deficient number, since it is larger than the sum of its proper divisors (565983).

916641 is a wasteful number, since it uses less digits than its factorization.

916641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 916641 is about 957.4137036830. The cubic root of 916641 is about 97.1403713938.

It can be divided in two parts, 9 and 16641, that multiplied together give a square (149769 = 387²).

The spelling of 916641 in words is "nine hundred sixteen thousand, six hundred forty-one".