69628079 has 2 divisors, whose sum is σ = 69628080. Its totient is φ = 69628078.

The previous prime is 69628049. The next prime is 69628081. The reversal of 69628079 is 97082696.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69628079 - 2⁸ = 69627823 is a prime.

Together with 69628081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69628049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34814039 + 34814040.

It is an arithmetic number, because the mean of its divisors is an integer number (34814040).

Almost surely, 2^69628079 is an apocalyptic number.

69628079 is a deficient number, since it is larger than the sum of its proper divisors (1).

69628079 is an equidigital number, since it uses as much as digits as its factorization.

69628079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 69628079 is about 8344.3441324049. The cubic root of 69628079 is about 411.3973322440.

The spelling of 69628079 in words is "sixty-nine million, six hundred twenty-eight thousand, seventy-nine".