68130812 has 6 divisors (see below), whose sum is σ = 119228928. Its totient is φ = 34065404.

The previous prime is 68130809. The next prime is 68130833. The reversal of 68130812 is 21803186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8516348 + ... + 8516355.

It is an arithmetic number, because the mean of its divisors is an integer number (19871488).

Almost surely, 2^68130812 is an apocalyptic number.

It is an amenable number.

68130812 is a deficient number, since it is larger than the sum of its proper divisors (51098116).

68130812 is a wasteful number, since it uses less digits than its factorization.

68130812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17032707 (or 17032705 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68130812 is about 8254.1390829086. The cubic root of 68130812 is about 408.4270726712.

Adding to 68130812 its reverse (21803186), we get a palindrome (89933998).

The spelling of 68130812 in words is "sixty-eight million, one hundred thirty thousand, eight hundred twelve".