68869240 has 32 divisors (see below), whose sum is σ = 169043760. Its totient is φ = 25043200.

The previous prime is 68869237. The next prime is 68869249. The reversal of 68869240 is 4296886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68869249) 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 7 ways as a sum of consecutive naturals, for example, 77821 + ... + 78700.

Almost surely, 2^68869240 is an apocalyptic number.

It is an amenable number.

68869240 is an abundant number, since it is smaller than the sum of its proper divisors (100174520).

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

68869240 is a wasteful number, since it uses less digits than its factorization.

68869240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156543 (or 156539 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 68869240 is about 8298.7493033589. The cubic root of 68869240 is about 409.8973369765.

The spelling of 68869240 in words is "sixty-eight million, eight hundred sixty-nine thousand, two hundred forty".