68288688 has 60 divisors (see below), whose sum is σ = 205820160. Its totient is φ = 21011328.

The previous prime is 68288683. The next prime is 68288719. The reversal of 68288688 is 88688286.

It is a super-2 number, since 2×68288688² = 9326689817522688, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (68288681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16368 + ... + 20111.

It is an arithmetic number, because the mean of its divisors is an integer number (3430336).

Almost surely, 2^68288688 is an apocalyptic number.

It is an amenable number.

68288688 is an abundant number, since it is smaller than the sum of its proper divisors (137531472).

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

68288688 is a wasteful number, since it uses less digits than its factorization.

68288688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36506 (or 36497 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The square root of 68288688 is about 8263.6969934770. The cubic root of 68288688 is about 408.7423049361.

The spelling of 68288688 in words is "sixty-eight million, two hundred eighty-eight thousand, six hundred eighty-eight".