71734505 has 4 divisors (see below), whose sum is σ = 86081412. Its totient is φ = 57387600.

The previous prime is 71734471. The next prime is 71734517. The reversal of 71734505 is 50543717.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50543717 = 7 ⋅7220531.

It can be written as a sum of positive squares in 2 ways, for example, as 37908649 + 33825856 = 6157^2 + 5816^2 .

It is not a de Polignac number, because 71734505 - 2⁸ = 71734249 is a prime.

It is a Duffinian 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, 7173446 + ... + 7173455.

It is an arithmetic number, because the mean of its divisors is an integer number (21520353).

Almost surely, 2^71734505 is an apocalyptic number.

It is an amenable number.

71734505 is a deficient number, since it is larger than the sum of its proper divisors (14346907).

71734505 is a wasteful number, since it uses less digits than its factorization.

71734505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14346906.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 71734505 is about 8469.6224827320. The cubic root of 71734505 is about 415.5047904943.

The spelling of 71734505 in words is "seventy-one million, seven hundred thirty-four thousand, five hundred five".