69478069 has 2 divisors, whose sum is σ = 69478070. Its totient is φ = 69478068.

The previous prime is 69478063. The next prime is 69478081. The reversal of 69478069 is 96087496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69105969 + 372100 = 8313^2 + 610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69478069 is a prime.

It is a super-2 number, since 2×69478069² = 9654404143937522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69478063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34739034 + 34739035.

It is an arithmetic number, because the mean of its divisors is an integer number (34739035).

Almost surely, 2^69478069 is an apocalyptic number.

It is an amenable number.

69478069 is a deficient number, since it is larger than the sum of its proper divisors (1).

69478069 is an equidigital number, since it uses as much as digits as its factorization.

69478069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 69478069 is about 8335.3505625139. The cubic root of 69478069 is about 411.1016752454.

The spelling of 69478069 in words is "sixty-nine million, four hundred seventy-eight thousand, sixty-nine".