71414721 has 24 divisors (see below), whose sum is σ = 119895360. Its totient is φ = 40114656.

The previous prime is 71414719. The next prime is 71414737. The reversal of 71414721 is 12741417.

It is not a de Polignac number, because 71414721 - 2¹ = 71414719 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71414821) 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 23 ways as a sum of consecutive naturals, for example, 5890 + ... + 13323.

It is an arithmetic number, because the mean of its divisors is an integer number (4995640).

Almost surely, 2^71414721 is an apocalyptic number.

It is an amenable number.

71414721 is a deficient number, since it is larger than the sum of its proper divisors (48480639).

71414721 is a wasteful number, since it uses less digits than its factorization.

71414721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19285 (or 19282 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 71414721 is about 8450.7231051550. The cubic root of 71414721 is about 414.8864468922.

The spelling of 71414721 in words is "seventy-one million, four hundred fourteen thousand, seven hundred twenty-one".