69681009 has 8 divisors (see below), whose sum is σ = 93068640. Its totient is φ = 46373696.

The previous prime is 69680993. The next prime is 69681019. The reversal of 69681009 is 90018696.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69681009 - 2⁴ = 69680993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69681019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18024 + ... + 21545.

It is an arithmetic number, because the mean of its divisors is an integer number (11633580).

Almost surely, 2^69681009 is an apocalyptic number.

It is an amenable number.

69681009 is a deficient number, since it is larger than the sum of its proper divisors (23387631).

69681009 is a wasteful number, since it uses less digits than its factorization.

69681009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40159.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 69681009 is about 8347.5151392495. The cubic root of 69681009 is about 411.5015514312.

The spelling of 69681009 in words is "sixty-nine million, six hundred eighty-one thousand, nine".