4781665 has 24 divisors (see below), whose sum is σ = 6915240. Its totient is φ = 3161088.

The previous prime is 4781663. The next prime is 4781669. The reversal of 4781665 is 5661874.

It can be written as a sum of positive squares in 4 ways, for example, as 283024 + 4498641 = 532^2 + 2121^2 .

It is not a de Polignac number, because 4781665 - 2¹ = 4781663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4781663) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6769 + ... + 7441.

It is an arithmetic number, because the mean of its divisors is an integer number (288135).

Almost surely, 2^4781665 is an apocalyptic number.

It is an amenable number.

4781665 is a deficient number, since it is larger than the sum of its proper divisors (2133575).

4781665 is a wasteful number, since it uses less digits than its factorization.

4781665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 714 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 4781665 is about 2186.7018543917. The cubic root of 4781665 is about 168.4714765327.

The spelling of 4781665 in words is "four million, seven hundred eighty-one thousand, six hundred sixty-five".