69819797 has 2 divisors, whose sum is σ = 69819798. Its totient is φ = 69819796.

The previous prime is 69819707. The next prime is 69819803. The reversal of 69819797 is 79791896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 33651601 = 6014^2 + 5801^2 .

It is a cyclic number.

It is not a de Polignac number, because 69819797 - 2¹² = 69815701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69819707) 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, 34909898 + 34909899.

It is an arithmetic number, because the mean of its divisors is an integer number (34909899).

Almost surely, 2^69819797 is an apocalyptic number.

It is an amenable number.

69819797 is a deficient number, since it is larger than the sum of its proper divisors (1).

69819797 is an equidigital number, since it uses as much as digits as its factorization.

69819797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 56.

The square root of 69819797 is about 8355.8241364931. The cubic root of 69819797 is about 411.7745746578.

The spelling of 69819797 in words is "sixty-nine million, eight hundred nineteen thousand, seven hundred ninety-seven".