84487671 has 64 divisors (see below), whose sum is σ = 141834240. Its totient is φ = 49420800.

The previous prime is 84487651. The next prime is 84487691. The reversal of 84487671 is 17678448.

It is an interprime number because it is at equal distance from previous prime (84487651) and next prime (84487691).

It is not a de Polignac number, because 84487671 - 2⁶ = 84487607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84487621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 559446 + ... + 559596.

It is an arithmetic number, because the mean of its divisors is an integer number (2216160).

Almost surely, 2^84487671 is an apocalyptic number.

84487671 is a deficient number, since it is larger than the sum of its proper divisors (57346569).

84487671 is a wasteful number, since it uses less digits than its factorization.

84487671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 247 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 84487671 is about 9191.7175217693. The cubic root of 84487671 is about 438.7978047115.

It can be divided in two parts, 84487 and 671, that added together give a palindrome (85158).

The spelling of 84487671 in words is "eighty-four million, four hundred eighty-seven thousand, six hundred seventy-one".