68219256 has 32 divisors (see below), whose sum is σ = 194912640. Its totient is φ = 19491168.

The previous prime is 68219243. The next prime is 68219267. The reversal of 68219256 is 65291286.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202866 + ... + 203201.

It is an arithmetic number, because the mean of its divisors is an integer number (6091020).

Almost surely, 2^68219256 is an apocalyptic number.

It is an amenable number.

68219256 is an abundant number, since it is smaller than the sum of its proper divisors (126693384).

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

68219256 is a wasteful number, since it uses less digits than its factorization.

68219256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406083 (or 406079 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 68219256 is about 8259.4948998108. The cubic root of 68219256 is about 408.6037294253.

The spelling of 68219256 in words is "sixty-eight million, two hundred nineteen thousand, two hundred fifty-six".