3651660566 has 8 divisors (see below), whose sum is σ = 5539035960. Its totient is φ = 1805315248.

The previous prime is 3651660533. The next prime is 3651660581. The reversal of 3651660566 is 6650661563.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10257296 + ... + 10257651.

It is an arithmetic number, because the mean of its divisors is an integer number (692379495).

Almost surely, 2^3651660566 is an apocalyptic number.

3651660566 is a deficient number, since it is larger than the sum of its proper divisors (1887375394).

3651660566 is a wasteful number, since it uses less digits than its factorization.

3651660566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20515038.

The product of its (nonzero) digits is 583200, while the sum is 44.

The square root of 3651660566 is about 60428.9712472420. The cubic root of 3651660566 is about 1539.9151814195.

The spelling of 3651660566 in words is "three billion, six hundred fifty-one million, six hundred sixty thousand, five hundred sixty-six".