3665905936 has 80 divisors (see below), whose sum is σ = 8919429120. Its totient is φ = 1417933440.

The previous prime is 3665905861. The next prime is 3665905949. The reversal of 3665905936 is 6395095663.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160545 + ... + 181951.

It is an arithmetic number, because the mean of its divisors is an integer number (111492864).

Almost surely, 2^3665905936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3665905936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4459714560).

3665905936 is an abundant number, since it is smaller than the sum of its proper divisors (5253523184).

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

3665905936 is a wasteful number, since it uses less digits than its factorization.

3665905936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572 (or 21566 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 52.

The square root of 3665905936 is about 60546.7252293631. The cubic root of 3665905936 is about 1541.9150202450.

The spelling of 3665905936 in words is "three billion, six hundred sixty-five million, nine hundred five thousand, nine hundred thirty-six".