2278320687 has 6 divisors (see below), whose sum is σ = 3290907672. Its totient is φ = 1518880452.

The previous prime is 2278320679. The next prime is 2278320721. The reversal of 2278320687 is 7860238722.

It is not a de Polignac number, because 2278320687 - 2³ = 2278320679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278320607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126573363 + ... + 126573380.

It is an arithmetic number, because the mean of its divisors is an integer number (548484612).

Almost surely, 2^2278320687 is an apocalyptic number.

2278320687 is a deficient number, since it is larger than the sum of its proper divisors (1012586985).

2278320687 is a wasteful number, since it uses less digits than its factorization.

2278320687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253146749 (or 253146746 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 2278320687 is about 47731.7576357712. The cubic root of 2278320687 is about 1315.8456563276.

The spelling of 2278320687 in words is "two billion, two hundred seventy-eight million, three hundred twenty thousand, six hundred eighty-seven".