4661857 has 6 divisors (see below), whose sum is σ = 4718774. Its totient is φ = 4605600.

The previous prime is 4661851. The next prime is 4661863. The reversal of 4661857 is 7581664.

It is an interprime number because it is at equal distance from previous prime (4661851) and next prime (4661863).

It can be written as a sum of positive squares in 3 ways, for example, as 3996001 + 665856 = 1999^2 + 816^2 .

It is not a de Polignac number, because 4661857 - 2³ = 4661849 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 (4661851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9973 + ... + 10429.

Almost surely, 2^4661857 is an apocalyptic number.

It is an amenable number.

4661857 is a deficient number, since it is larger than the sum of its proper divisors (56917).

4661857 is an equidigital number, since it uses as much as digits as its factorization.

4661857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 558 counting only the distinct ones).

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

The square root of 4661857 is about 2159.1333909696. The cubic root of 4661857 is about 167.0525012121.

The spelling of 4661857 in words is "four million, six hundred sixty-one thousand, eight hundred fifty-seven".