69135309 has 32 divisors (see below), whose sum is σ = 107688960. Its totient is φ = 43751664.

The previous prime is 69135293. The next prime is 69135331. The reversal of 69135309 is 90353196.

It is not a de Polignac number, because 69135309 - 2⁴ = 69135293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69135359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100882 + ... + 101564.

It is an arithmetic number, because the mean of its divisors is an integer number (3365280).

Almost surely, 2^69135309 is an apocalyptic number.

69135309 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

69135309 is a deficient number, since it is larger than the sum of its proper divisors (38553651).

69135309 is a wasteful number, since it uses less digits than its factorization.

69135309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 69135309 is about 8314.7645186139. The cubic root of 69135309 is about 410.4245236021.

The spelling of 69135309 in words is "sixty-nine million, one hundred thirty-five thousand, three hundred nine".