671754 has 8 divisors (see below), whose sum is σ = 1343520. Its totient is φ = 223916.

The previous prime is 671753. The next prime is 671777. The reversal of 671754 is 457176.

It is a happy number.

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

671754 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671754.

It is not an unprimeable number, because it can be changed into a prime (671753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55974 + ... + 55985.

It is an arithmetic number, because the mean of its divisors is an integer number (167940).

2⁶⁷¹⁷⁵⁴ is an apocalyptic number.

671754 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671754 is a wasteful number, since it uses less digits than its factorization.

671754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111964.

The product of its digits is 5880, while the sum is 30.

The square root of 671754 is about 819.6060029063. The cubic root of 671754 is about 87.5796933811.

The spelling of 671754 in words is "six hundred seventy-one thousand, seven hundred fifty-four".