69081309 has 16 divisors (see below), whose sum is σ = 111647040. Its totient is φ = 41867280.

The previous prime is 69081301. The next prime is 69081329. The reversal of 69081309 is 90318096.

It is not a de Polignac number, because 69081309 - 2³ = 69081301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69081301) 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 15 ways as a sum of consecutive naturals, for example, 116002 + ... + 116595.

It is an arithmetic number, because the mean of its divisors is an integer number (6977940).

Almost surely, 2^69081309 is an apocalyptic number.

It is an amenable number.

69081309 is a deficient number, since it is larger than the sum of its proper divisors (42565731).

69081309 is a wasteful number, since it uses less digits than its factorization.

69081309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232617 (or 232611 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 69081309 is about 8311.5166486027. The cubic root of 69081309 is about 410.3176380496.

The spelling of 69081309 in words is "sixty-nine million, eighty-one thousand, three hundred nine".