2278567 has 4 divisors (see below), whose sum is σ = 2281720. Its totient is φ = 2275416.

The previous prime is 2278553. The next prime is 2278631. The reversal of 2278567 is 7658722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2278567 - 2¹⁵ = 2245799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (570430).

2^2278567 is an apocalyptic number.

2278567 is a deficient number, since it is larger than the sum of its proper divisors (3153).

2278567 is a wasteful number, since it uses less digits than its factorization.

2278567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152.

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

The square root of 2278567 is about 1509.4922987548. The cubic root of 2278567 is about 131.5893074032.

The spelling of 2278567 in words is "two million, two hundred seventy-eight thousand, five hundred sixty-seven".