2678401 has 8 divisors (see below), whose sum is σ = 3093984. Its totient is φ = 2291520.

The previous prime is 2678399. The next prime is 2678437. The reversal of 2678401 is 1048762.

2678401 = 264² + 265² + ... + 297².

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

It is not a de Polignac number, because 2678401 - 2¹ = 2678399 is a prime.

It is an Ulam number.

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 2678401.

It is not an unprimeable number, because it can be changed into a prime (2678441) 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, 6975 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (386748).

2^2678401 is an apocalyptic number.

It is an amenable number.

2678401 is a deficient number, since it is larger than the sum of its proper divisors (415583).

2678401 is a wasteful number, since it uses less digits than its factorization.

2678401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14351.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2678401 is about 1636.5821091531. The cubic root of 2678401 is about 138.8753605549.

It can be divided in two parts, 267 and 8401, that added together give a palindrome (8668).

The spelling of 2678401 in words is "two million, six hundred seventy-eight thousand, four hundred one".