405010666 has 8 divisors (see below), whose sum is σ = 609047460. Its totient is φ = 201994848.

The previous prime is 405010663. The next prime is 405010687. The reversal of 405010666 is 666010504.

It can be written as a sum of positive squares in 2 ways, for example, as 404854641 + 156025 = 20121^2 + 395^2 .

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

It is not an unprimeable number, because it can be changed into a prime (405010663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254251 + ... + 255838.

Almost surely, 2^405010666 is an apocalyptic number.

405010666 is a deficient number, since it is larger than the sum of its proper divisors (204036794).

405010666 is a wasteful number, since it uses less digits than its factorization.

405010666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510488.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 405010666 is about 20124.8767946539. The cubic root of 405010666 is about 739.8701172095.

The spelling of 405010666 in words is "four hundred five million, ten thousand, six hundred sixty-six".