68824257 has 8 divisors (see below), whose sum is σ = 95755584. Its totient is φ = 43887888.

The previous prime is 68824253. The next prime is 68824277. The reversal of 68824257 is 75242886.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68824257 - 2² = 68824253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68824253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498658 + ... + 498795.

It is an arithmetic number, because the mean of its divisors is an integer number (11969448).

Almost surely, 2^68824257 is an apocalyptic number.

It is an amenable number.

68824257 is a deficient number, since it is larger than the sum of its proper divisors (26931327).

68824257 is a wasteful number, since it uses less digits than its factorization.

68824257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997479.

The product of its digits is 215040, while the sum is 42.

The square root of 68824257 is about 8296.0386329862. The cubic root of 68824257 is about 409.8080739625.

The spelling of 68824257 in words is "sixty-eight million, eight hundred twenty-four thousand, two hundred fifty-seven".