71739045 has 24 divisors (see below), whose sum is σ = 142112256. Its totient is φ = 32794848.

The previous prime is 71739013. The next prime is 71739049. The reversal of 71739045 is 54093717.

It is a happy number.

It is not a de Polignac number, because 71739045 - 2⁵ = 71739013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71739049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113557 + ... + 114186.

It is an arithmetic number, because the mean of its divisors is an integer number (5921344).

Almost surely, 2^71739045 is an apocalyptic number.

It is an amenable number.

71739045 is a deficient number, since it is larger than the sum of its proper divisors (70373211).

71739045 is a wasteful number, since it uses less digits than its factorization.

71739045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227761 (or 227758 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 71739045 is about 8469.8904951599. The cubic root of 71739045 is about 415.5135559271.

The spelling of 71739045 in words is "seventy-one million, seven hundred thirty-nine thousand, forty-five".