70889911 has 2 divisors, whose sum is σ = 70889912. Its totient is φ = 70889910.

The previous prime is 70889873. The next prime is 70889921. The reversal of 70889911 is 11998807.

It is a strong prime.

It is an emirp because it is prime and its reverse (11998807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70889911 - 2⁷ = 70889783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70889921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35444955 + 35444956.

It is an arithmetic number, because the mean of its divisors is an integer number (35444956).

Almost surely, 2^70889911 is an apocalyptic number.

70889911 is a deficient number, since it is larger than the sum of its proper divisors (1).

70889911 is an equidigital number, since it uses as much as digits as its factorization.

70889911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 70889911 is about 8419.6146586409. The cubic root of 70889911 is about 413.8676461635.

The spelling of 70889911 in words is "seventy million, eight hundred eighty-nine thousand, nine hundred eleven".