68257216 has 28 divisors (see below), whose sum is σ = 138010392. Its totient is φ = 33483008.

The previous prime is 68257153. The next prime is 68257247. The reversal of 68257216 is 61275286.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6670 + ... + 13453.

Almost surely, 2^68257216 is an apocalyptic number.

It is an amenable number.

68257216 is an abundant number, since it is smaller than the sum of its proper divisors (69753176).

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

68257216 is a wasteful number, since it uses less digits than its factorization.

68257216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20188 (or 20178 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 68257216 is about 8261.7925415735. The cubic root of 68257216 is about 408.6795033463.

It can be divided in two parts, 6825 and 7216, that added together give a palindrome (14041).

The spelling of 68257216 in words is "sixty-eight million, two hundred fifty-seven thousand, two hundred sixteen".