68561293 has 4 divisors (see below), whose sum is σ = 68592448. Its totient is φ = 68530140.

The previous prime is 68561287. The next prime is 68561309. The reversal of 68561293 is 39216586.

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 68561293 - 2⁵ = 68561261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68561263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12003 + ... + 16768.

It is an arithmetic number, because the mean of its divisors is an integer number (17148112).

Almost surely, 2^68561293 is an apocalyptic number.

It is an amenable number.

68561293 is a deficient number, since it is larger than the sum of its proper divisors (31155).

68561293 is a wasteful number, since it uses less digits than its factorization.

68561293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31154.

The product of its digits is 77760, while the sum is 40.

The square root of 68561293 is about 8280.1746962247. The cubic root of 68561293 is about 409.2854756979.

The spelling of 68561293 in words is "sixty-eight million, five hundred sixty-one thousand, two hundred ninety-three".