7875857 has 12 divisors (see below), whose sum is σ = 8847216. Its totient is φ = 6953040.

The previous prime is 7875841. The next prime is 7875869. The reversal of 7875857 is 7585787.

It is not a de Polignac number, because 7875857 - 2⁴ = 7875841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7875827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14798 + ... + 15320.

It is an arithmetic number, because the mean of its divisors is an integer number (737268).

Almost surely, 2^7875857 is an apocalyptic number.

It is an amenable number.

7875857 is a deficient number, since it is larger than the sum of its proper divisors (971359).

7875857 is a wasteful number, since it uses less digits than its factorization.

7875857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 571 counting only the distinct ones).

The product of its digits is 548800, while the sum is 47.

The square root of 7875857 is about 2806.3957311826. The cubic root of 7875857 is about 198.9600771744.

The spelling of 7875857 in words is "seven million, eight hundred seventy-five thousand, eight hundred fifty-seven".