70345171 has 4 divisors (see below), whose sum is σ = 75756352. Its totient is φ = 64933992.

The previous prime is 70345159. The next prime is 70345193. The reversal of 70345171 is 17154307.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70345171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70345111) 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, 2705571 + ... + 2705596.

It is an arithmetic number, because the mean of its divisors is an integer number (18939088).

Almost surely, 2^70345171 is an apocalyptic number.

70345171 is a deficient number, since it is larger than the sum of its proper divisors (5411181).

70345171 is a wasteful number, since it uses less digits than its factorization.

70345171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411180.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 70345171 is about 8387.2028114265. The cubic root of 70345171 is about 412.8048234813.

Adding to 70345171 its reverse (17154307), we get a palindrome (87499478).

The spelling of 70345171 in words is "seventy million, three hundred forty-five thousand, one hundred seventy-one".