2579678 has 4 divisors (see below), whose sum is σ = 3869520. Its totient is φ = 1289838.

The previous prime is 2579659. The next prime is 2579683. The reversal of 2579678 is 8769752.

It is a semiprime because it is the product of two primes.

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, 644918 + ... + 644921.

It is an arithmetic number, because the mean of its divisors is an integer number (967380).

2^2579678 is an apocalyptic number.

2579678 is a deficient number, since it is larger than the sum of its proper divisors (1289842).

2579678 is a wasteful number, since it uses less digits than its factorization.

2579678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289841.

The product of its digits is 211680, while the sum is 44.

The square root of 2579678 is about 1606.1376030714. The cubic root of 2579678 is about 137.1476909052.

The spelling of 2579678 in words is "two million, five hundred seventy-nine thousand, six hundred seventy-eight".