71020617 has 4 divisors (see below), whose sum is σ = 94694160. Its totient is φ = 47347076.

The previous prime is 71020571. The next prime is 71020627. The reversal of 71020617 is 71602017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71020617 - 2⁷ = 71020489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71020627) 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, 11836767 + ... + 11836772.

It is an arithmetic number, because the mean of its divisors is an integer number (23673540).

Almost surely, 2^71020617 is an apocalyptic number.

It is an amenable number.

71020617 is a deficient number, since it is larger than the sum of its proper divisors (23673543).

71020617 is a wasteful number, since it uses less digits than its factorization.

71020617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23673542.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 71020617 is about 8427.3730782492. The cubic root of 71020617 is about 414.1218514575.

The spelling of 71020617 in words is "seventy-one million, twenty thousand, six hundred seventeen".