71745574 has 8 divisors (see below), whose sum is σ = 107944488. Its totient is φ = 35764080.

The previous prime is 71745551. The next prime is 71745581. The reversal of 71745574 is 47554717.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53527 + ... + 54850.

It is an arithmetic number, because the mean of its divisors is an integer number (13493061).

Almost surely, 2^71745574 is an apocalyptic number.

71745574 is a deficient number, since it is larger than the sum of its proper divisors (36198914).

71745574 is a wasteful number, since it uses less digits than its factorization.

71745574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108710.

The product of its digits is 137200, while the sum is 40.

The square root of 71745574 is about 8470.2759105002. The cubic root of 71745574 is about 415.5261608979.

The spelling of 71745574 in words is "seventy-one million, seven hundred forty-five thousand, five hundred seventy-four".