671154 has 16 divisors (see below), whose sum is σ = 1464480. Its totient is φ = 203360.

The previous prime is 671141. The next prime is 671159. The reversal of 671154 is 451176.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (671159) 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, 5019 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (91530).

2⁶⁷¹¹⁵⁴ is an apocalyptic number.

671154 is an abundant number, since it is smaller than the sum of its proper divisors (793326).

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

671154 is a wasteful number, since it uses less digits than its factorization.

671154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185.

The product of its digits is 840, while the sum is 24.

The square root of 671154 is about 819.2398916068. The cubic root of 671154 is about 87.5536106838.

It can be divided in two parts, 67 and 1154, that added together give a palindrome (1221).

The spelling of 671154 in words is "six hundred seventy-one thousand, one hundred fifty-four".