2257678 has 8 divisors (see below), whose sum is σ = 3398472. Its totient is φ = 1124856.

The previous prime is 2257667. The next prime is 2257687. The reversal of 2257678 is 8767522.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225 + ... + 2452.

It is an arithmetic number, because the mean of its divisors is an integer number (424809).

2^2257678 is an apocalyptic number.

2257678 is a deficient number, since it is larger than the sum of its proper divisors (1140794).

2257678 is a wasteful number, since it uses less digits than its factorization.

2257678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986.

The product of its digits is 47040, while the sum is 37.

The square root of 2257678 is about 1502.5571536551. The cubic root of 2257678 is about 131.1859527272.

The spelling of 2257678 in words is "two million, two hundred fifty-seven thousand, six hundred seventy-eight".