3481565666 has 4 divisors (see below), whose sum is σ = 5222348502. Its totient is φ = 1740782832.

The previous prime is 3481565663. The next prime is 3481565671. The reversal of 3481565666 is 6665651843.

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., 2653795225 + 827770441 = 51515^2 + 28771^2 .

It is not an unprimeable number, because it can be changed into a prime (3481565663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870391415 + ... + 870391418.

Almost surely, 2^3481565666 is an apocalyptic number.

3481565666 is a deficient number, since it is larger than the sum of its proper divisors (1740782836).

3481565666 is a wasteful number, since it uses less digits than its factorization.

3481565666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740782835.

The product of its digits is 3110400, while the sum is 50.

The square root of 3481565666 is about 59004.7935849283. The cubic root of 3481565666 is about 1515.6241973261.

The spelling of 3481565666 in words is "three billion, four hundred eighty-one million, five hundred sixty-five thousand, six hundred sixty-six".