68894761 has 16 divisors (see below), whose sum is σ = 78929424. Its totient is φ = 59572224.

The previous prime is 68894759. The next prime is 68894783. The reversal of 68894761 is 16749886.

It can be written as a sum of positive squares in 8 ways, for example, as 4761 + 68890000 = 69^2 + 8300^2 .

It is a cyclic number.

It is not a de Polignac number, because 68894761 - 2¹ = 68894759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68894701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56191 + ... + 57403.

It is an arithmetic number, because the mean of its divisors is an integer number (4933089).

Almost surely, 2^68894761 is an apocalyptic number.

It is an amenable number.

68894761 is a deficient number, since it is larger than the sum of its proper divisors (10034663).

68894761 is a wasteful number, since it uses less digits than its factorization.

68894761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its digits is 580608, while the sum is 49.

The square root of 68894761 is about 8300.2868022738. The cubic root of 68894761 is about 409.9479628584.

It can be divided in two parts, 6889 and 4761, that multiplied together give a square (32798529 = 5727²).

The spelling of 68894761 in words is "sixty-eight million, eight hundred ninety-four thousand, seven hundred sixty-one".