2278466660 has 24 divisors (see below), whose sum is σ = 4914099960. Its totient is φ = 886754304.

The previous prime is 2278466657. The next prime is 2278466669. The reversal of 2278466660 is 666648722.

It can be written as a sum of positive squares in 4 ways, for example, as 1097994496 + 1180472164 = 33136^2 + 34358^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2278466669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538765 + ... + 1540244.

It is an arithmetic number, because the mean of its divisors is an integer number (204754165).

Almost surely, 2^2278466660 is an apocalyptic number.

2278466660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2278466660 is an abundant number, since it is smaller than the sum of its proper divisors (2635633300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2278466660 is a wasteful number, since it uses less digits than its factorization.

2278466660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079055 (or 3079053 counting only the distinct ones).

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

The square root of 2278466660 is about 47733.2867085433. The cubic root of 2278466660 is about 1315.8737579958.

The spelling of 2278466660 in words is "two billion, two hundred seventy-eight million, four hundred sixty-six thousand, six hundred sixty".