71063021 has 8 divisors (see below), whose sum is σ = 77383200. Its totient is φ = 65000880.

The previous prime is 71063011. The next prime is 71063033. The reversal of 71063021 is 12036017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71063021 - 2²² = 66868717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71062984 and 71063002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71063011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63935 + ... + 65036.

It is an arithmetic number, because the mean of its divisors is an integer number (9672900).

Almost surely, 2^71063021 is an apocalyptic number.

It is an amenable number.

71063021 is a deficient number, since it is larger than the sum of its proper divisors (6320179).

71063021 is a wasteful number, since it uses less digits than its factorization.

71063021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129019.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 71063021 is about 8429.8885520510. Note that the first 3 decimals coincide. The cubic root of 71063021 is about 414.2042544272.

Adding to 71063021 its reverse (12036017), we get a palindrome (83099038).

The spelling of 71063021 in words is "seventy-one million, sixty-three thousand, twenty-one".