3884609665 has 8 divisors (see below), whose sum is σ = 4665172608. Its totient is φ = 3105260400.

The previous prime is 3884609647. The next prime is 3884609693. The reversal of 3884609665 is 5669064883.

It is a happy number.

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

It is not a de Polignac number, because 3884609665 - 2⁹ = 3884609153 is a prime.

It is a super-2 number, since 2×3884609665² = 30180384498822824450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296361 + ... + 309190.

It is an arithmetic number, because the mean of its divisors is an integer number (583146576).

Almost surely, 2^3884609665 is an apocalyptic number.

It is an amenable number.

3884609665 is a deficient number, since it is larger than the sum of its proper divisors (780562943).

3884609665 is a wasteful number, since it uses less digits than its factorization.

3884609665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606839.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The square root of 3884609665 is about 62326.6368818341. The cubic root of 3884609665 is about 1571.9876464454.

The spelling of 3884609665 in words is "three billion, eight hundred eighty-four million, six hundred nine thousand, six hundred sixty-five".