68824857 has 32 divisors (see below), whose sum is σ = 100310400. Its totient is φ = 41811968.

The previous prime is 68824853. The next prime is 68824871. The reversal of 68824857 is 75842886.

It is a cyclic number.

It is not a de Polignac number, because 68824857 - 2² = 68824853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68824853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267673 + ... + 267929.

It is an arithmetic number, because the mean of its divisors is an integer number (3134700).

Almost surely, 2^68824857 is an apocalyptic number.

It is an amenable number.

68824857 is a deficient number, since it is larger than the sum of its proper divisors (31485543).

68824857 is a wasteful number, since it uses less digits than its factorization.

68824857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its digits is 860160, while the sum is 48.

The square root of 68824857 is about 8296.0747947448. The cubic root of 68824857 is about 409.8092648417.

The spelling of 68824857 in words is "sixty-eight million, eight hundred twenty-four thousand, eight hundred fifty-seven".