2678745 has 16 divisors (see below), whose sum is σ = 4328640. Its totient is φ = 1414464.

The previous prime is 2678743. The next prime is 2678747. The reversal of 2678745 is 5478762.

It is an interprime number because it is at equal distance from previous prime (2678743) and next prime (2678747).

It is not a de Polignac number, because 2678745 - 2¹ = 2678743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2678743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771 + ... + 2439.

It is an arithmetic number, because the mean of its divisors is an integer number (270540).

2^2678745 is an apocalyptic number.

It is an amenable number.

2678745 is a deficient number, since it is larger than the sum of its proper divisors (1649895).

2678745 is a wasteful number, since it uses less digits than its factorization.

2678745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784.

The product of its digits is 94080, while the sum is 39.

The square root of 2678745 is about 1636.6872028583. The cubic root of 2678745 is about 138.8813057786.

The spelling of 2678745 in words is "two million, six hundred seventy-eight thousand, seven hundred forty-five".