4640865 has 8 divisors (see below), whose sum is σ = 7425408. Its totient is φ = 2475120.

The previous prime is 4640863. The next prime is 4640869. The reversal of 4640865 is 5680464.

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 4640865 - 2¹ = 4640863 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4640863) 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, 154681 + ... + 154710.

It is an arithmetic number, because the mean of its divisors is an integer number (928176).

Almost surely, 2^4640865 is an apocalyptic number.

It is an amenable number.

4640865 is a deficient number, since it is larger than the sum of its proper divisors (2784543).

4640865 is a wasteful number, since it uses less digits than its factorization.

4640865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309399.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 4640865 is about 2154.2666965815. The cubic root of 4640865 is about 166.8013821921.

The spelling of 4640865 in words is "four million, six hundred forty thousand, eight hundred sixty-five".