4642857 has 6 divisors (see below), whose sum is σ = 6706362. Its totient is φ = 3095232.

The previous prime is 4642843. The next prime is 4642867. The reversal of 4642857 is 7582464.

4642857 is a `hidden beast` number, since 4 + 642 + 8 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2499561 + 2143296 = 1581^2 + 1464^2 .

It is not a de Polignac number, because 4642857 - 2⁸ = 4642601 is a prime.

It is a super-2 number, since 2×4642857² = 43112242244898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4642817) 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, 257928 + ... + 257945.

It is an arithmetic number, because the mean of its divisors is an integer number (1117727).

Almost surely, 2^4642857 is an apocalyptic number.

It is an amenable number.

4642857 is a deficient number, since it is larger than the sum of its proper divisors (2063505).

4642857 is a wasteful number, since it uses less digits than its factorization.

4642857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515879 (or 515876 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 4642857 is about 2154.7289852787. The cubic root of 4642857 is about 166.8252441823.

It can be divided in two parts, 464 and 2857, that added together give a triangular number (3321 = T₈₁).

The spelling of 4642857 in words is "four million, six hundred forty-two thousand, eight hundred fifty-seven".