71486457 has 16 divisors (see below), whose sum is σ = 109132800. Its totient is φ = 40774032.

The previous prime is 71486431. The next prime is 71486473. The reversal of 71486457 is 75468417.

It is not a de Polignac number, because 71486457 - 2¹¹ = 71484409 is a prime.

It is a super-2 number, since 2×71486457² = 10220627068825698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71486407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9738 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (6820800).

Almost surely, 2^71486457 is an apocalyptic number.

It is an amenable number.

71486457 is a deficient number, since it is larger than the sum of its proper divisors (37646343).

71486457 is a wasteful number, since it uses less digits than its factorization.

71486457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6292.

The product of its digits is 188160, while the sum is 42.

The square root of 71486457 is about 8454.9664103413. The cubic root of 71486457 is about 415.0253180470.

The spelling of 71486457 in words is "seventy-one million, four hundred eighty-six thousand, four hundred fifty-seven".