69275009 has 4 divisors (see below), whose sum is σ = 69780804. Its totient is φ = 68769216.

The previous prime is 69274999. The next prime is 69275023. The reversal of 69275009 is 90057296.

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 30250000 + 39025009 = 5500^2 + 6247^2 .

It is a cyclic number.

It is not a de Polignac number, because 69275009 - 2⁴ = 69274993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69275069) 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, 252692 + ... + 252965.

It is an arithmetic number, because the mean of its divisors is an integer number (17445201).

Almost surely, 2^69275009 is an apocalyptic number.

It is an amenable number.

69275009 is a deficient number, since it is larger than the sum of its proper divisors (505795).

69275009 is a wasteful number, since it uses less digits than its factorization.

69275009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505794.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 69275009 is about 8323.1609980824. The cubic root of 69275009 is about 410.7007824859.

The spelling of 69275009 in words is "sixty-nine million, two hundred seventy-five thousand, nine".