68687772 has 24 divisors (see below), whose sum is σ = 160413456. Its totient is φ = 22875648.

The previous prime is 68687719. The next prime is 68687789. The reversal of 68687772 is 27778686.

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, 18678 + ... + 22050.

It is an arithmetic number, because the mean of its divisors is an integer number (6683894).

Almost surely, 2^68687772 is an apocalyptic number.

It is an amenable number.

68687772 is an abundant number, since it is smaller than the sum of its proper divisors (91725684).

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

68687772 is a wasteful number, since it uses less digits than its factorization.

68687772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077 (or 5075 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 51.

The square root of 68687772 is about 8287.8086367869. The cubic root of 68687772 is about 409.5369986592.

The spelling of 68687772 in words is "sixty-eight million, six hundred eighty-seven thousand, seven hundred seventy-two".