69090013 has 2 divisors, whose sum is σ = 69090014. Its totient is φ = 69090012.

The previous prime is 69090011. The next prime is 69090017. The reversal of 69090013 is 31009096.

69090013 = 5877² + 5878².

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34550884 + 34539129 = 5878^2 + 5877^2 .

It is a cyclic number.

It is not a de Polignac number, because 69090013 - 2¹ = 69090011 is a prime.

Together with 69090011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69090011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34545006 + 34545007.

It is an arithmetic number, because the mean of its divisors is an integer number (34545007).

Almost surely, 2^69090013 is an apocalyptic number.

69090013 is the 5878-th centered square number.

It is an amenable number.

69090013 is a deficient number, since it is larger than the sum of its proper divisors (1).

69090013 is an equidigital number, since it uses as much as digits as its factorization.

69090013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 69090013 is about 8312.0402429247. The cubic root of 69090013 is about 410.3348701818.

The spelling of 69090013 in words is "sixty-nine million, ninety thousand, thirteen".