10643857 has 16 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 8577360.

The previous prime is 10643851. The next prime is 10643861. The reversal of 10643857 is 75834601.

It is not a de Polignac number, because 10643857 - 2³ = 10643849 is a prime.

It is a super-2 number, since 2×10643857² = 226583383672898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10643851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25194 + ... + 25612.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^10643857 is an apocalyptic number.

It is an amenable number.

10643857 is a deficient number, since it is larger than the sum of its proper divisors (2258543).

10643857 is a wasteful number, since it uses less digits than its factorization.

10643857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 10643857 is about 3262.4924520985. The cubic root of 10643857 is about 219.9714632407.

The spelling of 10643857 in words is "ten million, six hundred forty-three thousand, eight hundred fifty-seven".