71166156 has 12 divisors (see below), whose sum is σ = 166054392. Its totient is φ = 23722048.

The previous prime is 71166113. The next prime is 71166187. The reversal of 71166156 is 65166117.

71166156 = 2808² + 2809² + ... + 2816².

It is a tau number, because it is divible by the number of its divisors (12).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2965245 + ... + 2965268.

It is an arithmetic number, because the mean of its divisors is an integer number (13837866).

Almost surely, 2^71166156 is an apocalyptic number.

It is an amenable number.

71166156 is an abundant number, since it is smaller than the sum of its proper divisors (94888236).

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

71166156 is a wasteful number, since it uses less digits than its factorization.

71166156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930520 (or 5930518 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 71166156 is about 8436.0035561870. The cubic root of 71166156 is about 414.4045381827.

The spelling of 71166156 in words is "seventy-one million, one hundred sixty-six thousand, one hundred fifty-six".