71517066 has 8 divisors (see below), whose sum is σ = 143034144. Its totient is φ = 23839020.

The previous prime is 71517059. The next prime is 71517067. The reversal of 71517066 is 66071517.

It is a sphenic number, since it is the product of 3 distinct primes.

71517066 is an admirable number.

It is a super-2 number, since 2×71517066² = 10229381458496712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71517067) 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, 5959750 + ... + 5959761.

It is an arithmetic number, because the mean of its divisors is an integer number (17879268).

Almost surely, 2^71517066 is an apocalyptic number.

71517066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71517066 is a wasteful number, since it uses less digits than its factorization.

71517066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11919516.

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

The square root of 71517066 is about 8456.7763361697. The cubic root of 71517066 is about 415.0845446371.

The spelling of 71517066 in words is "seventy-one million, five hundred seventeen thousand, sixty-six".