671954 has 8 divisors (see below), whose sum is σ = 1061040. Its totient is φ = 318276.

The previous prime is 671947. The next prime is 671969. The reversal of 671954 is 459176.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 671954.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671954.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8804 + ... + 8879.

It is an arithmetic number, because the mean of its divisors is an integer number (132630).

2⁶⁷¹⁹⁵⁴ is an apocalyptic number.

671954 is a deficient number, since it is larger than the sum of its proper divisors (389086).

671954 is a wasteful number, since it uses less digits than its factorization.

671954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17704.

The product of its digits is 7560, while the sum is 32.

The square root of 671954 is about 819.7280036695. The cubic root of 671954 is about 87.5883841621.

The spelling of 671954 in words is "six hundred seventy-one thousand, nine hundred fifty-four".