117778466 has 12 divisors (see below), whose sum is σ = 191303442. Its totient is φ = 54359136.

The previous prime is 117778459. The next prime is 117778477. The reversal of 117778466 is 664877711.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 23280625 + 94497841 = 4825^2 + 9721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 117778466.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173891 + ... + 174566.

Almost surely, 2^117778466 is an apocalyptic number.

117778466 is a deficient number, since it is larger than the sum of its proper divisors (73524976).

117778466 is a wasteful number, since it uses less digits than its factorization.

117778466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348485 (or 348472 counting only the distinct ones).

The product of its digits is 395136, while the sum is 47.

The square root of 117778466 is about 10852.5787718864. The cubic root of 117778466 is about 490.1796731071.

The spelling of 117778466 in words is "one hundred seventeen million, seven hundred seventy-eight thousand, four hundred sixty-six".