69948881 has 2 divisors, whose sum is σ = 69948882. Its totient is φ = 69948880.

The previous prime is 69948869. The next prime is 69948887. The reversal of 69948881 is 18884996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67650625 + 2298256 = 8225^2 + 1516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69948881 is a prime.

It is a super-2 number, since 2×69948881² = 9785691906304322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (69948887) 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, 34974440 + 34974441.

It is an arithmetic number, because the mean of its divisors is an integer number (34974441).

Almost surely, 2^69948881 is an apocalyptic number.

It is an amenable number.

69948881 is a deficient number, since it is larger than the sum of its proper divisors (1).

69948881 is an equidigital number, since it uses as much as digits as its factorization.

69948881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 53.

The square root of 69948881 is about 8363.5447628383. The cubic root of 69948881 is about 412.0281836534.

The spelling of 69948881 in words is "sixty-nine million, nine hundred forty-eight thousand, eight hundred eighty-one".