3880665 has 24 divisors (see below), whose sum is σ = 6814080. Its totient is φ = 2042784.

The previous prime is 3880663. The next prime is 3880729. The reversal of 3880665 is 5660883.

It is not a de Polignac number, because 3880665 - 2¹ = 3880663 is a prime.

It is a super-3 number, since 3×3880665³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a Curzon number.

3880665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3880661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3216 + ... + 4254.

It is an arithmetic number, because the mean of its divisors is an integer number (283920).

Almost surely, 2^3880665 is an apocalyptic number.

It is an amenable number.

3880665 is a deficient number, since it is larger than the sum of its proper divisors (2933415).

3880665 is a wasteful number, since it uses less digits than its factorization.

3880665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3880665 is about 1969.9403544270. The cubic root of 3880665 is about 157.1455369476.

The spelling of 3880665 in words is "three million, eight hundred eighty thousand, six hundred sixty-five".