68227769 has 4 divisors (see below), whose sum is σ = 68604900. Its totient is φ = 67850640.

The previous prime is 68227751. The next prime is 68227811. The reversal of 68227769 is 96772286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 67453369 = 880^2 + 8213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68227769 is a prime.

It is a super-2 number, since 2×68227769² = 9310056925434722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68227739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188294 + ... + 188655.

It is an arithmetic number, because the mean of its divisors is an integer number (17151225).

Almost surely, 2^68227769 is an apocalyptic number.

It is an amenable number.

68227769 is a deficient number, since it is larger than the sum of its proper divisors (377131).

68227769 is a wasteful number, since it uses less digits than its factorization.

68227769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377130.

The product of its digits is 508032, while the sum is 47.

The square root of 68227769 is about 8260.0102300179. The cubic root of 68227769 is about 408.6207251098.

The spelling of 68227769 in words is "sixty-eight million, two hundred twenty-seven thousand, seven hundred sixty-nine".