71000063 has 4 divisors (see below), whose sum is σ = 71689488. Its totient is φ = 70310640.

The previous prime is 71000051. The next prime is 71000081. The reversal of 71000063 is 36000017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36000017 = 163 ⋅220859.

It is a cyclic number.

It is not a de Polignac number, because 71000063 - 2¹⁶ = 70934527 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 (71000263) 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, 344558 + ... + 344763.

It is an arithmetic number, because the mean of its divisors is an integer number (17922372).

Almost surely, 2^71000063 is an apocalyptic number.

71000063 is a deficient number, since it is larger than the sum of its proper divisors (689425).

71000063 is a wasteful number, since it uses less digits than its factorization.

71000063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689424.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 71000063 is about 8426.1535115378. The cubic root of 71000063 is about 414.0818974171.

The spelling of 71000063 in words is "seventy-one million, sixty-three", and thus it is an aban number and an uban number.