69638473 has 2 divisors, whose sum is σ = 69638474. Its totient is φ = 69638472.

The previous prime is 69638417. The next prime is 69638497. The reversal of 69638473 is 37483696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51079609 + 18558864 = 7147^2 + 4308^2 .

It is a cyclic number.

It is not a de Polignac number, because 69638473 - 2¹⁷ = 69507401 is a prime.

It is not a weakly prime, because it can be changed into another prime (69636473) 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, 34819236 + 34819237.

It is an arithmetic number, because the mean of its divisors is an integer number (34819237).

Almost surely, 2^69638473 is an apocalyptic number.

It is an amenable number.

69638473 is a deficient number, since it is larger than the sum of its proper divisors (1).

69638473 is an equidigital number, since it uses as much as digits as its factorization.

69638473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 46.

The square root of 69638473 is about 8344.9669262376. The cubic root of 69638473 is about 411.4178021999.

The spelling of 69638473 in words is "sixty-nine million, six hundred thirty-eight thousand, four hundred seventy-three".