71132643 has 12 divisors (see below), whose sum is σ = 102962808. Its totient is φ = 47322240.

The previous prime is 71132609. The next prime is 71132657. The reversal of 71132643 is 34623117.

71132643 is a `hidden beast` number, since 7 + 1 + 13 + 2 + 643 = 666.

It is not a de Polignac number, because 71132643 - 2⁸ = 71132387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71132603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3630 + ... + 12467.

It is an arithmetic number, because the mean of its divisors is an integer number (8580234).

Almost surely, 2^71132643 is an apocalyptic number.

71132643 is a deficient number, since it is larger than the sum of its proper divisors (31830165).

71132643 is a wasteful number, since it uses less digits than its factorization.

71132643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16594 (or 16591 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 71132643 is about 8434.0170144481. The cubic root of 71132643 is about 414.3394786064.

The spelling of 71132643 in words is "seventy-one million, one hundred thirty-two thousand, six hundred forty-three".