69660013 has 2 divisors, whose sum is σ = 69660014. Its totient is φ = 69660012.

The previous prime is 69659983. The next prime is 69660037. The reversal of 69660013 is 31006696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 9162729 = 7778^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 69660013 - 2⁵ = 69659981 is a prime.

It is a super-2 number, since 2×69660013² = 9705034822320338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69660083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34830006 + 34830007.

It is an arithmetic number, because the mean of its divisors is an integer number (34830007).

Almost surely, 2^69660013 is an apocalyptic number.

It is an amenable number.

69660013 is a deficient number, since it is larger than the sum of its proper divisors (1).

69660013 is an equidigital number, since it uses as much as digits as its factorization.

69660013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 69660013 is about 8346.2574247383. The cubic root of 69660013 is about 411.4602166179.

The spelling of 69660013 in words is "sixty-nine million, six hundred sixty thousand, thirteen".