71000070 has 16 divisors (see below), whose sum is σ = 170400240. Its totient is φ = 18933344.

The previous prime is 71000051. The next prime is 71000081. The reversal of 71000070 is 7000017.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183305 + ... + 1183364.

It is an arithmetic number, because the mean of its divisors is an integer number (10650015).

Almost surely, 2^71000070 is an apocalyptic number.

71000070 is an abundant number, since it is smaller than the sum of its proper divisors (99400170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71000070 is a wasteful number, since it uses less digits than its factorization.

71000070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366679.

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

The square root of 71000070 is about 8426.1539269111. The cubic root of 71000070 is about 414.0819110255.

Adding to 71000070 its reverse (7000017), we get a palindrome (78000087).

The spelling of 71000070 in words is "seventy-one million, seventy", and thus it is an aban number and an uban number.