70171289 has 4 divisors (see below), whose sum is σ = 71321700. Its totient is φ = 69020880.

The previous prime is 70171273. The next prime is 70171303. The reversal of 70171289 is 98217107.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25080064 + 45091225 = 5008^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 70171289 - 2⁴ = 70171273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70171589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575114 + ... + 575235.

It is an arithmetic number, because the mean of its divisors is an integer number (17830425).

Almost surely, 2^70171289 is an apocalyptic number.

It is an amenable number.

70171289 is a deficient number, since it is larger than the sum of its proper divisors (1150411).

70171289 is a wasteful number, since it uses less digits than its factorization.

70171289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150410.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 70171289 is about 8376.8304865265. The cubic root of 70171289 is about 412.4644137039.

The spelling of 70171289 in words is "seventy million, one hundred seventy-one thousand, two hundred eighty-nine".