71918001 has 12 divisors (see below), whose sum is σ = 105432912. Its totient is φ = 47229336.

The previous prime is 71917981. The next prime is 71918009. The reversal of 71918001 is 10081917.

It is not a de Polignac number, because 71918001 - 2¹¹ = 71915953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71918009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59031 + ... + 60236.

It is an arithmetic number, because the mean of its divisors is an integer number (8786076).

Almost surely, 2^71918001 is an apocalyptic number.

It is an amenable number.

71918001 is a deficient number, since it is larger than the sum of its proper divisors (33514911).

71918001 is a wasteful number, since it uses less digits than its factorization.

71918001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119340 (or 119337 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 71918001 is about 8480.4481603274. The cubic root of 71918001 is about 415.8587742538.

Adding to 71918001 its reverse (10081917), we get a palindrome (81999918).

The spelling of 71918001 in words is "seventy-one million, nine hundred eighteen thousand, one".