68309769 has 16 divisors (see below), whose sum is σ = 104590080. Its totient is φ = 39220560.

The previous prime is 68309767. The next prime is 68309809. The reversal of 68309769 is 96790386.

It is a happy number.

It is not a de Polignac number, because 68309769 - 2¹ = 68309767 is a prime.

It is a super-2 number, since 2×68309769² = 9332449081666722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68309767) 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, 53847 + ... + 55100.

It is an arithmetic number, because the mean of its divisors is an integer number (6536880).

Almost surely, 2^68309769 is an apocalyptic number.

It is an amenable number.

68309769 is a deficient number, since it is larger than the sum of its proper divisors (36280311).

68309769 is a wasteful number, since it uses less digits than its factorization.

68309769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108980.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 68309769 is about 8264.9724137471. The cubic root of 68309769 is about 408.7843607546.

The spelling of 68309769 in words is "sixty-eight million, three hundred nine thousand, seven hundred sixty-nine".