70889873 has 2 divisors, whose sum is σ = 70889874. Its totient is φ = 70889872.

The previous prime is 70889867. The next prime is 70889911. The reversal of 70889873 is 37898807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61105489 + 9784384 = 7817^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 70889873 - 2¹² = 70885777 is a prime.

It is a super-2 number, since 2×70889873² = 10050748187912258, 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 (70889573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35444936 + 35444937.

It is an arithmetic number, because the mean of its divisors is an integer number (35444937).

Almost surely, 2^70889873 is an apocalyptic number.

It is an amenable number.

70889873 is a deficient number, since it is larger than the sum of its proper divisors (1).

70889873 is an equidigital number, since it uses as much as digits as its factorization.

70889873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 70889873 is about 8419.6124020052. The cubic root of 70889873 is about 413.8675722133.

It can be divided in two parts, 7088 and 9873, that added together give a palindrome (16961).

The spelling of 70889873 in words is "seventy million, eight hundred eighty-nine thousand, eight hundred seventy-three".