3660855631 has 4 divisors (see below), whose sum is σ = 3683315032. Its totient is φ = 3638396232.

The previous prime is 3660855623. The next prime is 3660855641. The reversal of 3660855631 is 1365580663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365580663 = 27823 ⋅49081.

It is a cyclic number.

It is not a de Polignac number, because 3660855631 - 2³ = 3660855623 is a prime.

It is a super-3 number, since 3×3660855631³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3660855641) 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 3 ways as a sum of consecutive naturals, for example, 11229456 + ... + 11229781.

It is an arithmetic number, because the mean of its divisors is an integer number (920828758).

Almost surely, 2^3660855631 is an apocalyptic number.

3660855631 is a deficient number, since it is larger than the sum of its proper divisors (22459401).

3660855631 is a wasteful number, since it uses less digits than its factorization.

3660855631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22459400.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 3660855631 is about 60505.0050078504. The cubic root of 3660855631 is about 1541.2066260149.

The spelling of 3660855631 in words is "three billion, six hundred sixty million, eight hundred fifty-five thousand, six hundred thirty-one".