68637606 has 32 divisors (see below), whose sum is σ = 142702560. Its totient is φ = 21982464.

The previous prime is 68637599. The next prime is 68637607. The reversal of 68637606 is 60673686.

It is a super-2 number, since 2×68637606² = 9422241914822472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68637607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39696 + ... + 41388.

It is an arithmetic number, because the mean of its divisors is an integer number (4459455).

Almost surely, 2^68637606 is an apocalyptic number.

68637606 is an abundant number, since it is smaller than the sum of its proper divisors (74064954).

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

68637606 is a wasteful number, since it uses less digits than its factorization.

68637606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 68637606 is about 8284.7815903619. The cubic root of 68637606 is about 409.4372728219.

The spelling of 68637606 in words is "sixty-eight million, six hundred thirty-seven thousand, six hundred six".