69220397 has 2 divisors, whose sum is σ = 69220398. Its totient is φ = 69220396.

The previous prime is 69220391. The next prime is 69220433. The reversal of 69220397 is 79302296.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44009956 + 25210441 = 6634^2 + 5021^2 .

It is a cyclic number.

It is not a de Polignac number, because 69220397 - 2⁴ = 69220381 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69220397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69220391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34610198 + 34610199.

It is an arithmetic number, because the mean of its divisors is an integer number (34610199).

Almost surely, 2^69220397 is an apocalyptic number.

It is an amenable number.

69220397 is a deficient number, since it is larger than the sum of its proper divisors (1).

69220397 is an equidigital number, since it uses as much as digits as its factorization.

69220397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 69220397 is about 8319.8796265331. The cubic root of 69220397 is about 410.5928306769.

The spelling of 69220397 in words is "sixty-nine million, two hundred twenty thousand, three hundred ninety-seven".