71486864 has 10 divisors (see below), whose sum is σ = 138505830. Its totient is φ = 35743424.

The previous prime is 71486861. The next prime is 71486867. The reversal of 71486864 is 46868417.

It is an interprime number because it is at equal distance from previous prime (71486861) and next prime (71486867).

It can be written as a sum of positive squares in only one way, i.e., 38539264 + 32947600 = 6208^2 + 5740^2 .

It is a super-2 number, since 2×71486864² = 10220743449108992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71486861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2233949 + ... + 2233980.

It is an arithmetic number, because the mean of its divisors is an integer number (13850583).

Almost surely, 2^71486864 is an apocalyptic number.

It is an amenable number.

71486864 is a deficient number, since it is larger than the sum of its proper divisors (67018966).

71486864 is a wasteful number, since it uses less digits than its factorization.

71486864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467937 (or 4467931 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 71486864 is about 8454.9904790011. The cubic root of 71486864 is about 415.0261056786.

It can be divided in two parts, 714 and 86864, that added together give a palindrome (87578).

The spelling of 71486864 in words is "seventy-one million, four hundred eighty-six thousand, eight hundred sixty-four".