68807722 has 4 divisors (see below), whose sum is σ = 103211586. Its totient is φ = 34403860.

The previous prime is 68807719. The next prime is 68807723. The reversal of 68807722 is 22770886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64016001 + 4791721 = 8001^2 + 2189^2 .

It is not an unprimeable number, because it can be changed into a prime (68807723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17201929 + ... + 17201932.

Almost surely, 2^68807722 is an apocalyptic number.

68807722 is a deficient number, since it is larger than the sum of its proper divisors (34403864).

68807722 is a wasteful number, since it uses less digits than its factorization.

68807722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34403863.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 68807722 is about 8295.0420131546. The cubic root of 68807722 is about 409.7752525924.

The spelling of 68807722 in words is "sixty-eight million, eight hundred seven thousand, seven hundred twenty-two".