68087237 has 4 divisors (see below), whose sum is σ = 68104716. Its totient is φ = 68069760.

The previous prime is 68087233. The next prime is 68087263. The reversal of 68087237 is 73278086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27050401 + 41036836 = 5201^2 + 6406^2 .

It is a cyclic number.

It is not a de Polignac number, because 68087237 - 2² = 68087233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68087194 and 68087203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68087233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (17026179).

Almost surely, 2^68087237 is an apocalyptic number.

It is an amenable number.

68087237 is a deficient number, since it is larger than the sum of its proper divisors (17479).

68087237 is a wasteful number, since it uses less digits than its factorization.

68087237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17478.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 68087237 is about 8251.4990759255. The cubic root of 68087237 is about 408.3399803814.

The spelling of 68087237 in words is "sixty-eight million, eighty-seven thousand, two hundred thirty-seven".