2697878 has 4 divisors (see below), whose sum is σ = 4046820. Its totient is φ = 1348938.

The previous prime is 2697869. The next prime is 2697887. The reversal of 2697878 is 8787962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8787962 = 2 ⋅4393981.

It is an interprime number because it is at equal distance from previous prime (2697869) and next prime (2697887).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674468 + ... + 674471.

It is an arithmetic number, because the mean of its divisors is an integer number (1011705).

2^2697878 is an apocalyptic number.

2697878 is a deficient number, since it is larger than the sum of its proper divisors (1348942).

2697878 is a wasteful number, since it uses less digits than its factorization.

2697878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348941.

The product of its digits is 338688, while the sum is 47.

The square root of 2697878 is about 1642.5218415595. The cubic root of 2697878 is about 139.2111759975.

The spelling of 2697878 in words is "two million, six hundred ninety-seven thousand, eight hundred seventy-eight".