71005772 has 12 divisors (see below), whose sum is σ = 124595856. Its totient is φ = 35406960.

The previous prime is 71005763. The next prime is 71005783. The reversal of 71005772 is 27750017.

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, 22304 + ... + 25287.

It is an arithmetic number, because the mean of its divisors is an integer number (10382988).

Almost surely, 2^71005772 is an apocalyptic number.

It is an amenable number.

71005772 is a deficient number, since it is larger than the sum of its proper divisors (53590084).

71005772 is a wasteful number, since it uses less digits than its factorization.

71005772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47968 (or 47966 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 71005772 is about 8426.4922714021. The cubic root of 71005772 is about 414.0929956711.

Adding to 71005772 its reverse (27750017), we get a palindrome (98755789).

The spelling of 71005772 in words is "seventy-one million, five thousand, seven hundred seventy-two".