3665885684 has 6 divisors (see below), whose sum is σ = 6415299954. Its totient is φ = 1832942840.

The previous prime is 3665885681. The next prime is 3665885689. The reversal of 3665885684 is 4865885663.

It can be written as a sum of positive squares in only one way, i.e., 3383981584 + 281904100 = 58172^2 + 16790^2 .

It is a super-2 number, since 2×3665885684² = 26877435696312295712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665885681) 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 as a sum of consecutive naturals, namely, 458235707 + ... + 458235714.

It is an arithmetic number, because the mean of its divisors is an integer number (1069216659).

Almost surely, 2^3665885684 is an apocalyptic number.

It is an amenable number.

3665885684 is a deficient number, since it is larger than the sum of its proper divisors (2749414270).

3665885684 is a wasteful number, since it uses less digits than its factorization.

3665885684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916471425 (or 916471423 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 59.

The square root of 3665885684 is about 60546.5579863959. The cubic root of 3665885684 is about 1541.9121808450.

The spelling of 3665885684 in words is "three billion, six hundred sixty-five million, eight hundred eighty-five thousand, six hundred eighty-four".