66182818 has 8 divisors (see below), whose sum is σ = 106910748. Its totient is φ = 30545904.

The previous prime is 66182797. The next prime is 66182821. The reversal of 66182818 is 81828166.

It can be written as a sum of positive squares in 2 ways, for example, as 66048129 + 134689 = 8127^2 + 367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66182818² = 8760330796842248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272721 + ... + 1272772.

Almost surely, 2^66182818 is an apocalyptic number.

66182818 is a deficient number, since it is larger than the sum of its proper divisors (40727930).

66182818 is a wasteful number, since it uses less digits than its factorization.

66182818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545508.

The product of its digits is 36864, while the sum is 40.

The square root of 66182818 is about 8135.2822938113. The cubic root of 66182818 is about 404.4967951451.

The spelling of 66182818 in words is "sixty-six million, one hundred eighty-two thousand, eight hundred eighteen".