412561666 has 16 divisors (see below), whose sum is σ = 686170368. Its totient is φ = 184453200.

The previous prime is 412561637. The next prime is 412561693. The reversal of 412561666 is 666165214.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152370 + ... + 155053.

It is an arithmetic number, because the mean of its divisors is an integer number (42885648).

Almost surely, 2^412561666 is an apocalyptic number.

412561666 is a deficient number, since it is larger than the sum of its proper divisors (273608702).

412561666 is a wasteful number, since it uses less digits than its factorization.

412561666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307497.

The product of its digits is 51840, while the sum is 37.

The square root of 412561666 is about 20311.6140668338. The cubic root of 412561666 is about 744.4398690461.

The spelling of 412561666 in words is "four hundred twelve million, five hundred sixty-one thousand, six hundred sixty-six".