68937121 has 4 divisors (see below), whose sum is σ = 75204144. Its totient is φ = 62670100.

The previous prime is 68937107. The next prime is 68937131. The reversal of 68937121 is 12173986.

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 68937121 - 2¹³ = 68928929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68937131) 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, 3133495 + ... + 3133516.

It is an arithmetic number, because the mean of its divisors is an integer number (18801036).

Almost surely, 2^68937121 is an apocalyptic number.

It is an amenable number.

68937121 is a deficient number, since it is larger than the sum of its proper divisors (6267023).

68937121 is a wasteful number, since it uses less digits than its factorization.

68937121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267022.

The product of its digits is 18144, while the sum is 37.

The square root of 68937121 is about 8302.8381292182. The cubic root of 68937121 is about 410.0319645910.

The spelling of 68937121 in words is "sixty-eight million, nine hundred thirty-seven thousand, one hundred twenty-one".