68878036 has 12 divisors (see below), whose sum is σ = 120595860. Its totient is φ = 34422080.

The previous prime is 68878027. The next prime is 68878037. The reversal of 68878036 is 63087886.

It can be written as a sum of positive squares in 2 ways, for example, as 41525136 + 27352900 = 6444^2 + 5230^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68878037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11016 + ... + 16096.

It is an arithmetic number, because the mean of its divisors is an integer number (10049655).

Almost surely, 2^68878036 is an apocalyptic number.

It is an amenable number.

68878036 is a deficient number, since it is larger than the sum of its proper divisors (51717824).

68878036 is a wasteful number, since it uses less digits than its factorization.

68878036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8474 (or 8472 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 68878036 is about 8299.2792458141. The cubic root of 68878036 is about 409.9147869706.

The spelling of 68878036 in words is "sixty-eight million, eight hundred seventy-eight thousand, thirty-six".