71686054 has 16 divisors (see below), whose sum is σ = 117444096. Its totient is φ = 32545800.

The previous prime is 71686049. The next prime is 71686061. The reversal of 71686054 is 45068617.

It is a congruent number.

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, 25759 + ... + 28405.

It is an arithmetic number, because the mean of its divisors is an integer number (7340256).

Almost surely, 2^71686054 is an apocalyptic number.

71686054 is a deficient number, since it is larger than the sum of its proper divisors (45758042).

71686054 is a wasteful number, since it uses less digits than its factorization.

71686054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 71686054 is about 8466.7617186265. The cubic root of 71686054 is about 415.4112225210.

The spelling of 71686054 in words is "seventy-one million, six hundred eighty-six thousand, fifty-four".