70871173 has 4 divisors (see below), whose sum is σ = 70892800. Its totient is φ = 70849548.

The previous prime is 70871161. The next prime is 70871201. The reversal of 70871173 is 37117807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37117807 = 509 ⋅72923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70871173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70871573) 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 in 3 ways as a sum of consecutive naturals, for example, 4773 + ... + 12826.

It is an arithmetic number, because the mean of its divisors is an integer number (17723200).

Almost surely, 2^70871173 is an apocalyptic number.

It is an amenable number.

70871173 is a deficient number, since it is larger than the sum of its proper divisors (21627).

70871173 is a wasteful number, since it uses less digits than its factorization.

70871173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21626.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 70871173 is about 8418.5018263347. The cubic root of 70871173 is about 413.8311777144.

The spelling of 70871173 in words is "seventy million, eight hundred seventy-one thousand, one hundred seventy-three".