70000071 has 4 divisors (see below), whose sum is σ = 93333432. Its totient is φ = 46666712.

The previous prime is 70000069. The next prime is 70000081. The reversal of 70000071 is 17000007.

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

It is a cyclic number.

It is not a de Polignac number, because 70000071 - 2¹ = 70000069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70000071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11666676 + ... + 11666681.

It is an arithmetic number, because the mean of its divisors is an integer number (23333358).

Almost surely, 2^70000071 is an apocalyptic number.

70000071 is a deficient number, since it is larger than the sum of its proper divisors (23333361).

70000071 is a wasteful number, since it uses less digits than its factorization.

70000071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23333360.

The product of its (nonzero) digits is 49, while the sum is 15.

The square root of 70000071 is about 8366.6045084012. The cubic root of 70000071 is about 412.1286693195.

Adding to 70000071 its reverse (17000007), we get a palindrome (87000078).

The spelling of 70000071 in words is "seventy million, seventy-one", and thus it is an aban number and an uban number.