918671 has 4 divisors (see below), whose sum is σ = 989352. Its totient is φ = 847992.

The previous prime is 918653. The next prime is 918677. The reversal of 918671 is 176819.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 918671 - 2¹⁸ = 656527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35321 + ... + 35346.

It is an arithmetic number, because the mean of its divisors is an integer number (247338).

2⁹¹⁸⁶⁷¹ is an apocalyptic number.

918671 is a deficient number, since it is larger than the sum of its proper divisors (70681).

918671 is a wasteful number, since it uses less digits than its factorization.

918671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70680.

The product of its digits is 3024, while the sum is 32.

The square root of 918671 is about 958.4732651462. The cubic root of 918671 is about 97.2120277867.

The spelling of 918671 in words is "nine hundred eighteen thousand, six hundred seventy-one".