68552237 has 8 divisors (see below), whose sum is σ = 74095896. Its totient is φ = 63047232.

The previous prime is 68552219. The next prime is 68552251. The reversal of 68552237 is 73225586.

It can be written as a sum of positive squares in 4 ways, for example, as 7540516 + 61011721 = 2746^2 + 7811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68552237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68552237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68552137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5918 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (9261987).

Almost surely, 2^68552237 is an apocalyptic number.

It is an amenable number.

68552237 is a deficient number, since it is larger than the sum of its proper divisors (5543659).

68552237 is a wasteful number, since it uses less digits than its factorization.

68552237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19327.

The product of its digits is 100800, while the sum is 38.

The square root of 68552237 is about 8279.6278298001. The cubic root of 68552237 is about 409.2674545847.

The spelling of 68552237 in words is "sixty-eight million, five hundred fifty-two thousand, two hundred thirty-seven".