71198066 has 8 divisors (see below), whose sum is σ = 106976604. Its totient is φ = 35539200.

The previous prime is 71198053. The next prime is 71198069. The reversal of 71198066 is 66089117.

It can be written as a sum of positive squares in 2 ways, for example, as 71149225 + 48841 = 8435^2 + 221^2 .

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

It is not an unprimeable number, because it can be changed into a prime (71198069) 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, 28415 + ... + 30818.

Almost surely, 2^71198066 is an apocalyptic number.

71198066 is a deficient number, since it is larger than the sum of its proper divisors (35778538).

71198066 is a wasteful number, since it uses less digits than its factorization.

71198066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59836.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 71198066 is about 8437.8946426226. The cubic root of 71198066 is about 414.4664668372.

The spelling of 71198066 in words is "seventy-one million, one hundred ninety-eight thousand, sixty-six".