70705671 has 4 divisors (see below), whose sum is σ = 94274232. Its totient is φ = 47137112.

The previous prime is 70705667. The next prime is 70705673. The reversal of 70705671 is 17650707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17650707 = 3 ⋅5883569.

It is a cyclic number.

It is not a de Polignac number, because 70705671 - 2² = 70705667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70705673) 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, 11784276 + ... + 11784281.

It is an arithmetic number, because the mean of its divisors is an integer number (23568558).

Almost surely, 2^70705671 is an apocalyptic number.

70705671 is a deficient number, since it is larger than the sum of its proper divisors (23568561).

70705671 is a wasteful number, since it uses less digits than its factorization.

70705671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568560.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 70705671 is about 8408.6664222099. Note that the first 3 decimals coincide. The cubic root of 70705671 is about 413.5087933671.

The spelling of 70705671 in words is "seventy million, seven hundred five thousand, six hundred seventy-one".