71056617 has 16 divisors (see below), whose sum is σ = 100848960. Its totient is φ = 44347392.

The previous prime is 71056607. The next prime is 71056669. The reversal of 71056617 is 71665017.

It is not a de Polignac number, because 71056617 - 2⁶ = 71056553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71056607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6234 + ... + 13452.

It is an arithmetic number, because the mean of its divisors is an integer number (6303060).

Almost surely, 2^71056617 is an apocalyptic number.

It is an amenable number.

71056617 is a deficient number, since it is larger than the sum of its proper divisors (29792343).

71056617 is a wasteful number, since it uses less digits than its factorization.

71056617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 71056617 is about 8429.5087045450. The cubic root of 71056617 is about 414.1918117451.

Subtracting 71056617 from its reverse (71665017), we obtain a square (608400 = 780²).

The spelling of 71056617 in words is "seventy-one million, fifty-six thousand, six hundred seventeen".