69280069 has 2 divisors, whose sum is σ = 69280070. Its totient is φ = 69280068.

The previous prime is 69280067. The next prime is 69280087. The reversal of 69280069 is 96008296.

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., 52780225 + 16499844 = 7265^2 + 4062^2 .

It is a cyclic number.

It is not a de Polignac number, because 69280069 - 2¹ = 69280067 is a prime.

It is a super-2 number, since 2×69280069² = 9599455921289522, which contains 22 as substring.

Together with 69280067, 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 (69280067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34640034 + 34640035.

It is an arithmetic number, because the mean of its divisors is an integer number (34640035).

Almost surely, 2^69280069 is an apocalyptic number.

It is an amenable number.

69280069 is a deficient number, since it is larger than the sum of its proper divisors (1).

69280069 is an equidigital number, since it uses as much as digits as its factorization.

69280069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 69280069 is about 8323.4649635834. The cubic root of 69280069 is about 410.7107817406.

The spelling of 69280069 in words is "sixty-nine million, two hundred eighty thousand, sixty-nine".