68523988 has 24 divisors (see below), whose sum is σ = 129579912. Its totient is φ = 31519104.

The previous prime is 68523971. The next prime is 68524003. The reversal of 68523988 is 88932586.

It can be written as a sum of positive squares in 4 ways, for example, as 659344 + 67864644 = 812^2 + 8238^2 .

It is a congruent number.

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, 14406 + ... + 18562.

It is an arithmetic number, because the mean of its divisors is an integer number (5399163).

Almost surely, 2^68523988 is an apocalyptic number.

It is an amenable number.

68523988 is a deficient number, since it is larger than the sum of its proper divisors (61055924).

68523988 is a wasteful number, since it uses less digits than its factorization.

68523988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491 (or 4489 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 68523988 is about 8277.9217198522. The cubic root of 68523988 is about 409.2112298950.

The spelling of 68523988 in words is "sixty-eight million, five hundred twenty-three thousand, nine hundred eighty-eight".