69163421 has 2 divisors, whose sum is σ = 69163422. Its totient is φ = 69163420.

The previous prime is 69163417. The next prime is 69163427. The reversal of 69163421 is 12436196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44023225 + 25140196 = 6635^2 + 5014^2 .

It is a cyclic number.

It is not a de Polignac number, because 69163421 - 2² = 69163417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69163427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34581710 + 34581711.

It is an arithmetic number, because the mean of its divisors is an integer number (34581711).

Almost surely, 2^69163421 is an apocalyptic number.

It is an amenable number.

69163421 is a deficient number, since it is larger than the sum of its proper divisors (1).

69163421 is an equidigital number, since it uses as much as digits as its factorization.

69163421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 69163421 is about 8316.4548336416. The cubic root of 69163421 is about 410.4801454007.

The spelling of 69163421 in words is "sixty-nine million, one hundred sixty-three thousand, four hundred twenty-one".