671278 has 8 divisors (see below), whose sum is σ = 1050768. Its totient is φ = 321024.

The previous prime is 671269. The next prime is 671287. The reversal of 671278 is 872176.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (671269) and next prime (671287).

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

It is a super-2 number, since 2×671278² = 901228306568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7251 + ... + 7342.

It is an arithmetic number, because the mean of its divisors is an integer number (131346).

2⁶⁷¹²⁷⁸ is an apocalyptic number.

671278 is a deficient number, since it is larger than the sum of its proper divisors (379490).

671278 is a wasteful number, since it uses less digits than its factorization.

671278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14618.

The product of its digits is 4704, while the sum is 31.

The square root of 671278 is about 819.3155680200. The cubic root of 671278 is about 87.5590023819.

It can be divided in two parts, 671 and 278, that added together give a palindrome (949).

The spelling of 671278 in words is "six hundred seventy-one thousand, two hundred seventy-eight".