68751761 has 8 divisors (see below), whose sum is σ = 77259840. Its totient is φ = 60703632.

The previous prime is 68751751. The next prime is 68751773. The reversal of 68751761 is 16715786.

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 68751761 - 2¹⁴ = 68735377 is a prime.

It is a super-2 number, since 2×68751761² = 9453609281202242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68751751) 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, 114671 + ... + 115268.

It is an arithmetic number, because the mean of its divisors is an integer number (9657480).

Almost surely, 2^68751761 is an apocalyptic number.

It is an amenable number.

68751761 is a deficient number, since it is larger than the sum of its proper divisors (8508079).

68751761 is a wasteful number, since it uses less digits than its factorization.

68751761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229975.

The product of its digits is 70560, while the sum is 41.

The square root of 68751761 is about 8291.6681675041. The cubic root of 68751761 is about 409.6641330274.

The spelling of 68751761 in words is "sixty-eight million, seven hundred fifty-one thousand, seven hundred sixty-one".