2678021 has 8 divisors (see below), whose sum is σ = 2745600. Its totient is φ = 2611440.

The previous prime is 2678017. The next prime is 2678041. The reversal of 2678021 is 1208762.

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

It is a cyclic number.

It is not a de Polignac number, because 2678021 - 2² = 2678017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8456 + ... + 8766.

It is an arithmetic number, because the mean of its divisors is an integer number (343200).

2^2678021 is an apocalyptic number.

It is an amenable number.

2678021 is a deficient number, since it is larger than the sum of its proper divisors (67579).

2678021 is a wasteful number, since it uses less digits than its factorization.

2678021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 2678021 is about 1636.4660094240. The cubic root of 2678021 is about 138.8687925649.

The spelling of 2678021 in words is "two million, six hundred seventy-eight thousand, twenty-one".