71858164 has 24 divisors (see below), whose sum is σ = 149966208. Its totient is φ = 29457120.

The previous prime is 71858161. The next prime is 71858197. The reversal of 71858164 is 46185817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71858161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55147 + ... + 56434.

It is an arithmetic number, because the mean of its divisors is an integer number (6248592).

Almost surely, 2^71858164 is an apocalyptic number.

It is an amenable number.

71858164 is an abundant number, since it is smaller than the sum of its proper divisors (78108044).

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

71858164 is a wasteful number, since it uses less digits than its factorization.

71858164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111615 (or 111613 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 71858164 is about 8476.9194876441. The cubic root of 71858164 is about 415.7434083948.

The spelling of 71858164 in words is "seventy-one million, eight hundred fifty-eight thousand, one hundred sixty-four".