3687231666 has 16 divisors (see below), whose sum is σ = 7403846688. Its totient is φ = 1224180000.

The previous prime is 3687231659. The next prime is 3687231671. The reversal of 3687231666 is 6661327863.

It is a happy number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1222675 + ... + 1225686.

It is an arithmetic number, because the mean of its divisors is an integer number (462740418).

Almost surely, 2^3687231666 is an apocalyptic number.

3687231666 is an abundant number, since it is smaller than the sum of its proper divisors (3716615022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3687231666 is a wasteful number, since it uses less digits than its factorization.

3687231666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448617.

The product of its digits is 1306368, while the sum is 48.

The square root of 3687231666 is about 60722.5795400689. The cubic root of 3687231666 is about 1544.8991762947.

The spelling of 3687231666 in words is "three billion, six hundred eighty-seven million, two hundred thirty-one thousand, six hundred sixty-six".