71572671 has 12 divisors (see below), whose sum is σ = 103515048. Its totient is φ = 47654064.

The previous prime is 71572663. The next prime is 71572673. The reversal of 71572671 is 17627517.

It is not a de Polignac number, because 71572671 - 2³ = 71572663 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71572673) 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 11 ways as a sum of consecutive naturals, for example, 3016 + ... + 12338.

It is an arithmetic number, because the mean of its divisors is an integer number (8626254).

Almost surely, 2^71572671 is an apocalyptic number.

71572671 is a deficient number, since it is larger than the sum of its proper divisors (31942377).

71572671 is a wasteful number, since it uses less digits than its factorization.

71572671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10182 (or 10179 counting only the distinct ones).

The product of its digits is 20580, while the sum is 36.

The square root of 71572671 is about 8460.0632976355. The cubic root of 71572671 is about 415.1920937773.

The spelling of 71572671 in words is "seventy-one million, five hundred seventy-two thousand, six hundred seventy-one".