408082666 has 4 divisors (see below), whose sum is σ = 612124002. Its totient is φ = 204041332.

The previous prime is 408082643. The next prime is 408082687. The reversal of 408082666 is 666280804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 384356025 + 23726641 = 19605^2 + 4871^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102020665 + ... + 102020668.

Almost surely, 2^408082666 is an apocalyptic number.

408082666 is a deficient number, since it is larger than the sum of its proper divisors (204041336).

408082666 is a wasteful number, since it uses less digits than its factorization.

408082666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204041335.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 408082666 is about 20201.0560615033. The cubic root of 408082666 is about 741.7360421463.

The spelling of 408082666 in words is "four hundred eight million, eighty-two thousand, six hundred sixty-six".