993671 has 8 divisors (see below), whose sum is σ = 1159200. Its totient is φ = 851424.

The previous prime is 993647. The next prime is 993679. The reversal of 993671 is 176399.

It is a de Polignac number, because none of the positive numbers 2^k-993671 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106 + ... + 1791.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2⁹⁹³⁶⁷¹ is an apocalyptic number.

993671 is a deficient number, since it is larger than the sum of its proper divisors (165529).

993671 is an equidigital number, since it uses as much as digits as its factorization.

993671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918 (or 2904 counting only the distinct ones).

The product of its digits is 10206, while the sum is 35.

The square root of 993671 is about 996.8304770622. The cubic root of 993671 is about 99.7885866924.

The spelling of 993671 in words is "nine hundred ninety-three thousand, six hundred seventy-one".