68408688 has 40 divisors (see below), whose sum is σ = 180488448. Its totient is φ = 22316992.

The previous prime is 68408617. The next prime is 68408689. The reversal of 68408688 is 88680486.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68408689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12906 + ... + 17417.

Almost surely, 2^68408688 is an apocalyptic number.

It is an amenable number.

68408688 is an abundant number, since it is smaller than the sum of its proper divisors (112079760).

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

68408688 is a wasteful number, since it uses less digits than its factorization.

68408688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30381 (or 30375 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The square root of 68408688 is about 8270.9544793814. The cubic root of 68408688 is about 408.9815850454.

It can be divided in two parts, 68408 and 688, that added together give a palindrome (69096).

The spelling of 68408688 in words is "sixty-eight million, four hundred eight thousand, six hundred eighty-eight".