71480771 has 4 divisors (see below), whose sum is σ = 71498544. Its totient is φ = 71463000.

The previous prime is 71480743. The next prime is 71480779. The reversal of 71480771 is 17708417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17708417 = 97 ⋅182561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71480771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71480779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 11961.

It is an arithmetic number, because the mean of its divisors is an integer number (17874636).

Almost surely, 2^71480771 is an apocalyptic number.

71480771 is a deficient number, since it is larger than the sum of its proper divisors (17773).

71480771 is a wasteful number, since it uses less digits than its factorization.

71480771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17772.

The product of its (nonzero) digits is 10976, while the sum is 35.

The square root of 71480771 is about 8454.6301515797. The cubic root of 71480771 is about 415.0143141141.

The spelling of 71480771 in words is "seventy-one million, four hundred eighty thousand, seven hundred seventy-one".