3661546856 has 32 divisors (see below), whose sum is σ = 7498461600. Its totient is φ = 1662354240.

The previous prime is 3661546849. The next prime is 3661546859. The reversal of 3661546856 is 6586451663.

It is not an unprimeable number, because it can be changed into a prime (3661546859) 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 in 7 ways as a sum of consecutive naturals, for example, 50675 + ... + 99453.

It is an arithmetic number, because the mean of its divisors is an integer number (234326925).

Almost surely, 2^3661546856 is an apocalyptic number.

It is an amenable number.

3661546856 is an abundant number, since it is smaller than the sum of its proper divisors (3836914744).

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

3661546856 is a wasteful number, since it uses less digits than its factorization.

3661546856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49649 (or 49645 counting only the distinct ones).

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

The square root of 3661546856 is about 60510.7168689977. The cubic root of 3661546856 is about 1541.3036209632.

The spelling of 3661546856 in words is "three billion, six hundred sixty-one million, five hundred forty-six thousand, eight hundred fifty-six".