2678671 has 4 divisors (see below), whose sum is σ = 2735712. Its totient is φ = 2621632.

The previous prime is 2678651. The next prime is 2678681. The reversal of 2678671 is 1768762.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2678671 - 2¹⁷ = 2547599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2678671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28450 + ... + 28543.

It is an arithmetic number, because the mean of its divisors is an integer number (683928).

2^2678671 is an apocalyptic number.

2678671 is a deficient number, since it is larger than the sum of its proper divisors (57041).

2678671 is an equidigital number, since it uses as much as digits as its factorization.

2678671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57040.

The product of its digits is 28224, while the sum is 37.

The square root of 2678671 is about 1636.6645960611. The cubic root of 2678671 is about 138.8800269072.

Subtracting from 2678671 its reverse (1768762), we obtain a palindrome (909909).

The spelling of 2678671 in words is "two million, six hundred seventy-eight thousand, six hundred seventy-one".