68266769 has 4 divisors (see below), whose sum is σ = 69285744. Its totient is φ = 67247796.

The previous prime is 68266721. The next prime is 68266787. The reversal of 68266769 is 96766286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96766286 = 2 ⋅48383143.

It is a cyclic number.

It is not a de Polignac number, because 68266769 - 2¹² = 68262673 is a prime.

It is a super-2 number, since 2×68266769² = 9320703499398722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68266969) 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, 509387 + ... + 509520.

It is an arithmetic number, because the mean of its divisors is an integer number (17321436).

Almost surely, 2^68266769 is an apocalyptic number.

It is an amenable number.

68266769 is a deficient number, since it is larger than the sum of its proper divisors (1018975).

68266769 is a wasteful number, since it uses less digits than its factorization.

68266769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018974.

The product of its digits is 1306368, while the sum is 50.

The square root of 68266769 is about 8262.3706646458. The cubic root of 68266769 is about 408.6985681593.

The spelling of 68266769 in words is "sixty-eight million, two hundred sixty-six thousand, seven hundred sixty-nine".