68257816 has 32 divisors (see below), whose sum is σ = 140259600. Its totient is φ = 30883840.

The previous prime is 68257811. The next prime is 68257829. The reversal of 68257816 is 61875286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68257811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18840 + ... + 22168.

Almost surely, 2^68257816 is an apocalyptic number.

It is an amenable number.

68257816 is an abundant number, since it is smaller than the sum of its proper divisors (72001784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68257816 is a wasteful number, since it uses less digits than its factorization.

68257816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579 (or 3575 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 68257816 is about 8261.8288532261. The cubic root of 68257816 is about 408.6807008118.

It can be divided in two parts, 6825 and 7816, that added together give a palindrome (14641).

The spelling of 68257816 in words is "sixty-eight million, two hundred fifty-seven thousand, eight hundred sixteen".