3663366785 has 8 divisors (see below), whose sum is σ = 4734197160. Its totient is φ = 2705255424.

The previous prime is 3663366779. The next prime is 3663366787. The reversal of 3663366785 is 5876633663.

3663366785 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 277988929 + 3385377856 = 16673^2 + 58184^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3663366785 - 2¹⁴ = 3663350401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3663366787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28179680 + ... + 28179809.

It is an arithmetic number, because the mean of its divisors is an integer number (591774645).

Almost surely, 2^3663366785 is an apocalyptic number.

It is an amenable number.

3663366785 is a deficient number, since it is larger than the sum of its proper divisors (1070830375).

3663366785 is a wasteful number, since it uses less digits than its factorization.

3663366785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56359507.

The product of its digits is 9797760, while the sum is 53.

The square root of 3663366785 is about 60525.7530725558. The cubic root of 3663366785 is about 1541.5589409737.

The spelling of 3663366785 in words is "three billion, six hundred sixty-three million, three hundred sixty-six thousand, seven hundred eighty-five".