71810164 has 12 divisors (see below), whose sum is σ = 126501088. Its totient is φ = 35667000.

The previous prime is 71810149. The next prime is 71810191. The reversal of 71810164 is 46101817.

It is a congruent number.

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, 58842 + ... + 60049.

Almost surely, 2^71810164 is an apocalyptic number.

It is an amenable number.

71810164 is a deficient number, since it is larger than the sum of its proper divisors (54690924).

71810164 is a wasteful number, since it uses less digits than its factorization.

71810164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119046 (or 119044 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 71810164 is about 8474.0877975154. The cubic root of 71810164 is about 415.6508179941.

The spelling of 71810164 in words is "seventy-one million, eight hundred ten thousand, one hundred sixty-four".