2678655 has 32 divisors (see below), whose sum is σ = 4967424. Its totient is φ = 1207296.

The previous prime is 2678651. The next prime is 2678681. The reversal of 2678655 is 5568762.

It is a happy number.

It is not a de Polignac number, because 2678655 - 2² = 2678651 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 10054 + ... + 10316.

It is an arithmetic number, because the mean of its divisors is an integer number (155232).

2^2678655 is an apocalyptic number.

2678655 is a deficient number, since it is larger than the sum of its proper divisors (2288769).

2678655 is a wasteful number, since it uses less digits than its factorization.

2678655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375.

The product of its digits is 100800, while the sum is 39.

The square root of 2678655 is about 1636.6597080640. The cubic root of 2678655 is about 138.8797503913.

It can be divided in two parts, 2678 and 655, that added together give a palindrome (3333).

The spelling of 2678655 in words is "two million, six hundred seventy-eight thousand, six hundred fifty-five".