68111764 has 18 divisors (see below), whose sum is σ = 138656490. Its totient is φ = 29190672.

The previous prime is 68111761. The next prime is 68111773. The reversal of 68111764 is 46711186.

It can be written as a sum of positive squares in only one way, i.e., 44782864 + 23328900 = 6692^2 + 4830^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68111761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173559 + ... + 173950.

Almost surely, 2^68111764 is an apocalyptic number.

It is an amenable number.

68111764 is an abundant number, since it is smaller than the sum of its proper divisors (70544726).

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

68111764 is a wasteful number, since it uses less digits than its factorization.

68111764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347527 (or 347518 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 68111764 is about 8252.9851568993. The cubic root of 68111764 is about 408.3890064680.

The spelling of 68111764 in words is "sixty-eight million, one hundred eleven thousand, seven hundred sixty-four".