2278666406 has 32 divisors (see below), whose sum is σ = 3540734208. Its totient is φ = 1099173600.

The previous prime is 2278666381. The next prime is 2278666427. The reversal of 2278666406 is 6046668722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2947436 + ... + 2948208.

It is an arithmetic number, because the mean of its divisors is an integer number (110647944).

Almost surely, 2^2278666406 is an apocalyptic number.

2278666406 is a deficient number, since it is larger than the sum of its proper divisors (1262067802).

2278666406 is a wasteful number, since it uses less digits than its factorization.

2278666406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 2278666406 is about 47735.3789761849. The cubic root of 2278666406 is about 1315.9122097089.

The spelling of 2278666406 in words is "two billion, two hundred seventy-eight million, six hundred sixty-six thousand, four hundred six".