68137532 has 12 divisors (see below), whose sum is σ = 120180480. Its totient is φ = 33800256.

The previous prime is 68137483. The next prime is 68137541. The reversal of 68137532 is 23573186.

It is a junction number, because it is equal to n+sod(n) for n = 68137492 and 68137501.

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 3 ways as a sum of consecutive naturals, for example, 66557 + ... + 67572.

It is an arithmetic number, because the mean of its divisors is an integer number (10015040).

Almost surely, 2^68137532 is an apocalyptic number.

It is an amenable number.

68137532 is a deficient number, since it is larger than the sum of its proper divisors (52042948).

68137532 is a wasteful number, since it uses less digits than its factorization.

68137532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134260 (or 134258 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 68137532 is about 8254.5461413696. The cubic root of 68137532 is about 408.4405004661.

The spelling of 68137532 in words is "sixty-eight million, one hundred thirty-seven thousand, five hundred thirty-two".