68118740 has 12 divisors (see below), whose sum is σ = 143049396. Its totient is φ = 27247488.

The previous prime is 68118737. The next prime is 68118797. The reversal of 68118740 is 4781186.

It can be written as a sum of positive squares in 2 ways, for example, as 45346756 + 22771984 = 6734^2 + 4772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68118740.

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, 1702949 + ... + 1702988.

It is an arithmetic number, because the mean of its divisors is an integer number (11920783).

Almost surely, 2^68118740 is an apocalyptic number.

It is an amenable number.

68118740 is an abundant number, since it is smaller than the sum of its proper divisors (74930656).

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

68118740 is a wasteful number, since it uses less digits than its factorization.

68118740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405946 (or 3405944 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 68118740 is about 8253.4077810320. The cubic root of 68118740 is about 408.4029483790.

It can be divided in two parts, 6811 and 8740, that added together give a palindrome (15551).

The spelling of 68118740 in words is "sixty-eight million, one hundred eighteen thousand, seven hundred forty".