68219616 has 24 divisors (see below), whose sum is σ = 179076744. Its totient is φ = 22739840.

The previous prime is 68219611. The next prime is 68219647. The reversal of 68219616 is 61691286.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68219611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355215 + ... + 355406.

It is an arithmetic number, because the mean of its divisors is an integer number (7461531).

Almost surely, 2^68219616 is an apocalyptic number.

It is an amenable number.

68219616 is an abundant number, since it is smaller than the sum of its proper divisors (110857128).

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

68219616 is a wasteful number, since it uses less digits than its factorization.

68219616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710634 (or 710626 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 68219616 is about 8259.5166928822. The cubic root of 68219616 is about 408.6044481719.

The spelling of 68219616 in words is "sixty-eight million, two hundred nineteen thousand, six hundred sixteen".