68066761 has 8 divisors (see below), whose sum is σ = 77914944. Its totient is φ = 58249680.

The previous prime is 68066749. The next prime is 68066773. The reversal of 68066761 is 16766086.

It is an interprime number because it is at equal distance from previous prime (68066749) and next prime (68066773).

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 68066761 - 2⁷ = 68066633 is a prime.

It is a super-2 number, since 2×68066761² = 9266167906062242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68066711) 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 7 ways as a sum of consecutive naturals, for example, 2875 + ... + 12016.

It is an arithmetic number, because the mean of its divisors is an integer number (9739368).

Almost surely, 2^68066761 is an apocalyptic number.

It is an amenable number.

68066761 is a deficient number, since it is larger than the sum of its proper divisors (9848183).

68066761 is a wasteful number, since it uses less digits than its factorization.

68066761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 68066761 is about 8250.2582383826. The cubic root of 68066761 is about 408.2990426663.

The spelling of 68066761 in words is "sixty-eight million, sixty-six thousand, seven hundred sixty-one".