68879616 has 72 divisors (see below), whose sum is σ = 197450400. Its totient is φ = 21190656.

The previous prime is 68879567. The next prime is 68879633. The reversal of 68879616 is 61697886.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 6535 + ... + 13433.

Almost surely, 2^68879616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68879616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98725200).

68879616 is an abundant number, since it is smaller than the sum of its proper divisors (128570784).

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

68879616 is a wasteful number, since it uses less digits than its factorization.

68879616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931 (or 6917 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 68879616 is about 8299.3744342571. The cubic root of 68879616 is about 409.9179213051.

The spelling of 68879616 in words is "sixty-eight million, eight hundred seventy-nine thousand, six hundred sixteen".