4663861 has 4 divisors (see below), whose sum is σ = 4668300. Its totient is φ = 4659424.

The previous prime is 4663859. The next prime is 4663913. The reversal of 4663861 is 1683664.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2924100 + 1739761 = 1710^2 + 1319^2 .

It is a cyclic number.

It is not a de Polignac number, because 4663861 - 2¹ = 4663859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4663801) 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 3 ways as a sum of consecutive naturals, for example, 345 + ... + 3073.

It is an arithmetic number, because the mean of its divisors is an integer number (1167075).

Almost surely, 2^4663861 is an apocalyptic number.

It is an amenable number.

4663861 is a deficient number, since it is larger than the sum of its proper divisors (4439).

4663861 is a wasteful number, since it uses less digits than its factorization.

4663861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438.

The product of its digits is 20736, while the sum is 34.

The square root of 4663861 is about 2159.5974161866. The cubic root of 4663861 is about 167.0764348258.

The spelling of 4663861 in words is "four million, six hundred sixty-three thousand, eight hundred sixty-one".