71172266 has 16 divisors (see below), whose sum is σ = 116735040. Its totient is φ = 32275680.

The previous prime is 71172253. The next prime is 71172301. The reversal of 71172266 is 66227117.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6515 + ... + 13593.

It is an arithmetic number, because the mean of its divisors is an integer number (7295940).

Almost surely, 2^71172266 is an apocalyptic number.

71172266 is a deficient number, since it is larger than the sum of its proper divisors (45562774).

71172266 is a wasteful number, since it uses less digits than its factorization.

71172266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7549.

The product of its digits is 7056, while the sum is 32.

The square root of 71172266 is about 8436.3656867161. The cubic root of 71172266 is about 414.4163974681.

The spelling of 71172266 in words is "seventy-one million, one hundred seventy-two thousand, two hundred sixty-six".