68791892 has 12 divisors (see below), whose sum is σ = 129646356. Its totient is φ = 31750080.

The previous prime is 68791889. The next prime is 68791901. The reversal of 68791892 is 29819786.

It can be written as a sum of positive squares in 2 ways, for example, as 38365636 + 30426256 = 6194^2 + 5516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68791892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661409 + ... + 661512.

It is an arithmetic number, because the mean of its divisors is an integer number (10803863).

Almost surely, 2^68791892 is an apocalyptic number.

It is an amenable number.

68791892 is a deficient number, since it is larger than the sum of its proper divisors (60854464).

68791892 is a wasteful number, since it uses less digits than its factorization.

68791892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322938 (or 1322936 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 68791892 is about 8294.0877738302. The cubic root of 68791892 is about 409.7438256945.

The spelling of 68791892 in words is "sixty-eight million, seven hundred ninety-one thousand, eight hundred ninety-two".