4881645 has 24 divisors (see below), whose sum is σ = 8570016. Its totient is φ = 2570208.

The previous prime is 4881641. The next prime is 4881649. The reversal of 4881645 is 5461884.

4881645 is a `hidden beast` number, since 4 + 8 + 8 + 1 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (4881641) and next prime (4881649).

It is not a de Polignac number, because 4881645 - 2² = 4881641 is a prime.

It is a super-3 number, since 3×4881645³ (a number of 21 digits) contains 333 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4881641) 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, 3082 + ... + 4388.

It is an arithmetic number, because the mean of its divisors is an integer number (357084).

Almost surely, 2^4881645 is an apocalyptic number.

4881645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4881645 is a deficient number, since it is larger than the sum of its proper divisors (3688371).

4881645 is a wasteful number, since it uses less digits than its factorization.

4881645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1398 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 4881645 is about 2209.4445003213. Note that the first 3 decimals coincide. The cubic root of 4881645 is about 169.6375785404.

The spelling of 4881645 in words is "four million, eight hundred eighty-one thousand, six hundred forty-five".