68272637 has 4 divisors (see below), whose sum is σ = 68596416. Its totient is φ = 67948860.

The previous prime is 68272621. The next prime is 68272651. The reversal of 68272637 is 73627286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68272637 - 2⁴ = 68272621 is a prime.

It is a super-2 number, since 2×68272637² = 9322305925867538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68272594 and 68272603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68272537) by changing a digit.

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, 161573 + ... + 161994.

It is an arithmetic number, because the mean of its divisors is an integer number (17149104).

Almost surely, 2^68272637 is an apocalyptic number.

It is an amenable number.

68272637 is a deficient number, since it is larger than the sum of its proper divisors (323779).

68272637 is a wasteful number, since it uses less digits than its factorization.

68272637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323778.

The product of its digits is 169344, while the sum is 41.

The square root of 68272637 is about 8262.7257609097. The cubic root of 68272637 is about 408.7102779781.

The spelling of 68272637 in words is "sixty-eight million, two hundred seventy-two thousand, six hundred thirty-seven".