86487872 has 14 divisors (see below), whose sum is σ = 171624498. Its totient is φ = 43243904.

The previous prime is 86487871. The next prime is 86487881. The reversal of 86487872 is 27878468.

It can be written as a sum of positive squares in only one way, i.e., 79852096 + 6635776 = 8936^2 + 2576^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86487872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86487871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675623 + ... + 675750.

Almost surely, 2^86487872 is an apocalyptic number.

It is an amenable number.

86487872 is a deficient number, since it is larger than the sum of its proper divisors (85136626).

86487872 is a wasteful number, since it uses less digits than its factorization.

86487872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351385 (or 1351375 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The square root of 86487872 is about 9299.8855906941. The cubic root of 86487872 is about 442.2336009163.

The spelling of 86487872 in words is "eighty-six million, four hundred eighty-seven thousand, eight hundred seventy-two".