68131261 has 8 divisors (see below), whose sum is σ = 74421504. Its totient is φ = 61857120.

The previous prime is 68131243. The next prime is 68131277. The reversal of 68131261 is 16213186.

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

It is a cyclic number.

It is not a de Polignac number, because 68131261 - 2⁹ = 68130749 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 (68131201) 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, 5905 + ... + 13081.

It is an arithmetic number, because the mean of its divisors is an integer number (9302688).

Almost surely, 2^68131261 is an apocalyptic number.

It is an amenable number.

68131261 is a deficient number, since it is larger than the sum of its proper divisors (6290243).

68131261 is a wasteful number, since it uses less digits than its factorization.

68131261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8051.

The product of its digits is 1728, while the sum is 28.

The square root of 68131261 is about 8254.1662813394. The cubic root of 68131261 is about 408.4279698833.

The spelling of 68131261 in words is "sixty-eight million, one hundred thirty-one thousand, two hundred sixty-one".