71861134 has 4 divisors (see below), whose sum is σ = 107791704. Its totient is φ = 35930566.

The previous prime is 71861117. The next prime is 71861149. The reversal of 71861134 is 43116817.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 71861096 and 71861105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17965282 + ... + 17965285.

It is an arithmetic number, because the mean of its divisors is an integer number (26947926).

Almost surely, 2^71861134 is an apocalyptic number.

71861134 is a deficient number, since it is larger than the sum of its proper divisors (35930570).

71861134 is a wasteful number, since it uses less digits than its factorization.

71861134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35930569.

The product of its digits is 4032, while the sum is 31.

The square root of 71861134 is about 8477.0946673964. The cubic root of 71861134 is about 415.7491360711.

The spelling of 71861134 in words is "seventy-one million, eight hundred sixty-one thousand, one hundred thirty-four".