70959881 has 2 divisors, whose sum is σ = 70959882. Its totient is φ = 70959880.

The previous prime is 70959871. The next prime is 70959919. The reversal of 70959881 is 18895907.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37319881 + 33640000 = 6109^2 + 5800^2 .

It is a cyclic number.

It is not a de Polignac number, because 70959881 - 2¹⁰ = 70958857 is a prime.

It is a super-2 number, since 2×70959881² = 10070609423068322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70959841) 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, 35479940 + 35479941.

It is an arithmetic number, because the mean of its divisors is an integer number (35479941).

Almost surely, 2^70959881 is an apocalyptic number.

It is an amenable number.

70959881 is a deficient number, since it is larger than the sum of its proper divisors (1).

70959881 is an equidigital number, since it uses as much as digits as its factorization.

70959881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 70959881 is about 8423.7688121173. The cubic root of 70959881 is about 414.0037670704.

The spelling of 70959881 in words is "seventy million, nine hundred fifty-nine thousand, eight hundred eighty-one".