2278706 has 4 divisors (see below), whose sum is σ = 3418062. Its totient is φ = 1139352.

The previous prime is 2278693. The next prime is 2278709. The reversal of 2278706 is 6078722.

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

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 43681 = 1495^2 + 209^2 .

It is not an unprimeable number, because it can be changed into a prime (2278709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569675 + ... + 569678.

2^2278706 is an apocalyptic number.

2278706 is a deficient number, since it is larger than the sum of its proper divisors (1139356).

2278706 is a wasteful number, since it uses less digits than its factorization.

2278706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139355.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 2278706 is about 1509.5383400232. The cubic root of 2278706 is about 131.5919831408.

The spelling of 2278706 in words is "two million, two hundred seventy-eight thousand, seven hundred six".