4320857 has 2 divisors, whose sum is σ = 4320858. Its totient is φ = 4320856.

The previous prime is 4320853. The next prime is 4320863. The reversal of 4320857 is 7580234.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4145296 + 175561 = 2036^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320857 - 2² = 4320853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4320853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160428 + 2160429.

It is an arithmetic number, because the mean of its divisors is an integer number (2160429).

Almost surely, 2^4320857 is an apocalyptic number.

It is an amenable number.

4320857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4320857 is an equidigital number, since it uses as much as digits as its factorization.

4320857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 4320857 is about 2078.6671210177. The cubic root of 4320857 is about 162.8758259868.

The spelling of 4320857 in words is "four million, three hundred twenty thousand, eight hundred fifty-seven".