71958985 has 32 divisors (see below), whose sum is σ = 104544000. Its totient is φ = 46448640.

The previous prime is 71958961. The next prime is 71959003. The reversal of 71958985 is 58985917.

It is not a de Polignac number, because 71958985 - 2⁹ = 71958473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160041 + ... + 160489.

It is an arithmetic number, because the mean of its divisors is an integer number (3267000).

Almost surely, 2^71958985 is an apocalyptic number.

It is an amenable number.

71958985 is a deficient number, since it is larger than the sum of its proper divisors (32585015).

71958985 is a wasteful number, since it uses less digits than its factorization.

71958985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its digits is 907200, while the sum is 52.

The square root of 71958985 is about 8482.8641978992. The cubic root of 71958985 is about 415.9377545705.

The spelling of 71958985 in words is "seventy-one million, nine hundred fifty-eight thousand, nine hundred eighty-five".