68346167761 has 3 divisors (see below), whose sum is σ = 68346429193. Its totient is φ = 68345906330.

The previous prime is 68346167683. The next prime is 68346167777. The reversal of 68346167761 is 16776164386.

The square root of 68346167761 is 261431.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 68346167761 - 2¹³ = 68346159569 is a prime.

It is a super-2 number, since 2×68346167761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68346161761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 130716 + ... + 392146.

Almost surely, 2^68346167761 is an apocalyptic number.

68346167761 is the 261431-st square number.

68346167761 is the 130716-th centered octagonal number.

It is an amenable number.

68346167761 is a deficient number, since it is larger than the sum of its proper divisors (261432).

68346167761 is an frugal number, since it uses more digits than its factorization.

68346167761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522862 (or 261431 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 55.

The spelling of 68346167761 in words is "sixty-eight billion, three hundred forty-six million, one hundred sixty-seven thousand, seven hundred sixty-one".