4871645 has 4 divisors (see below), whose sum is σ = 5845980. Its totient is φ = 3897312.

The previous prime is 4871641. The next prime is 4871663. The reversal of 4871645 is 5461784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2627641 + 2244004 = 1621^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 4871645 - 2² = 4871641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4871641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487160 + ... + 487169.

It is an arithmetic number, because the mean of its divisors is an integer number (1461495).

Almost surely, 2^4871645 is an apocalyptic number.

It is an amenable number.

4871645 is a deficient number, since it is larger than the sum of its proper divisors (974335).

4871645 is an equidigital number, since it uses as much as digits as its factorization.

4871645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974334.

The product of its digits is 26880, while the sum is 35.

The square root of 4871645 is about 2207.1803279297. The cubic root of 4871645 is about 169.5216657390.

The spelling of 4871645 in words is "four million, eight hundred seventy-one thousand, six hundred forty-five".