84587481 has 12 divisors (see below), whose sum is σ = 133289520. Its totient is φ = 51265080.

The previous prime is 84587473. The next prime is 84587521. The reversal of 84587481 is 18478548.

It is not a de Polignac number, because 84587481 - 2³ = 84587473 is a prime.

It is a super-2 number, since 2×84587481² = 14310083883850722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84587401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 427111 + ... + 427308.

It is an arithmetic number, because the mean of its divisors is an integer number (11107460).

Almost surely, 2^84587481 is an apocalyptic number.

It is an amenable number.

84587481 is a deficient number, since it is larger than the sum of its proper divisors (48702039).

84587481 is a wasteful number, since it uses less digits than its factorization.

84587481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854436 (or 854433 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 84587481 is about 9197.1452636131. The cubic root of 84587481 is about 438.9705288234.

The spelling of 84587481 in words is "eighty-four million, five hundred eighty-seven thousand, four hundred eighty-one".