71506486 has 8 divisors (see below), whose sum is σ = 107508744. Its totient is φ = 35670240.

The previous prime is 71506451. The next prime is 71506529. The reversal of 71506486 is 68460517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71506486² = 10226355080136392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40420 + ... + 42151.

It is an arithmetic number, because the mean of its divisors is an integer number (13438593).

Almost surely, 2^71506486 is an apocalyptic number.

71506486 is a deficient number, since it is larger than the sum of its proper divisors (36002258).

71506486 is a wasteful number, since it uses less digits than its factorization.

71506486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83006.

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

The square root of 71506486 is about 8456.1507791666. The cubic root of 71506486 is about 415.0640748793.

The spelling of 71506486 in words is "seventy-one million, five hundred six thousand, four hundred eighty-six".