68868040 has 32 divisors (see below), whose sum is σ = 160299000. Its totient is φ = 26596864.

The previous prime is 68868001. The next prime is 68868061. The reversal of 68868040 is 4086886.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36990724 + 31877316 = 6082^2 + 5646^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 68867984 and 68868002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28525 + ... + 30844.

Almost surely, 2^68868040 is an apocalyptic number.

It is an amenable number.

68868040 is an abundant number, since it is smaller than the sum of its proper divisors (91430960).

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

68868040 is a wasteful number, since it uses less digits than its factorization.

68868040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59409 (or 59405 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 68868040 is about 8298.6770029927. The cubic root of 68868040 is about 409.8949562346.

The spelling of 68868040 in words is "sixty-eight million, eight hundred sixty-eight thousand, forty".