71163047 has 4 divisors (see below), whose sum is σ = 72505800. Its totient is φ = 69820296.

The previous prime is 71163023. The next prime is 71163049. The reversal of 71163047 is 74036117.

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 71163047 - 2¹² = 71158951 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 (71163049) 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, 671297 + ... + 671402.

It is an arithmetic number, because the mean of its divisors is an integer number (18126450).

Almost surely, 2^71163047 is an apocalyptic number.

71163047 is a deficient number, since it is larger than the sum of its proper divisors (1342753).

71163047 is a wasteful number, since it uses less digits than its factorization.

71163047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342752.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 71163047 is about 8435.8192844560. The cubic root of 71163047 is about 414.3985034674.

The spelling of 71163047 in words is "seventy-one million, one hundred sixty-three thousand, forty-seven".