84672513 has 8 divisors (see below), whose sum is σ = 125440800. Its totient is φ = 56448324.

The previous prime is 84672487. The next prime is 84672527. The reversal of 84672513 is 31527648.

84672513 is a `hidden beast` number, since 84 + 67 + 2 + 513 = 666.

It is not a de Polignac number, because 84672513 - 2⁹ = 84672001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84672583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1567983 + ... + 1568036.

It is an arithmetic number, because the mean of its divisors is an integer number (15680100).

It is a Proth number, since it is equal to 323 ⋅ 2¹⁸ + 1 and 323 < 2¹⁸.

Almost surely, 2^84672513 is an apocalyptic number.

It is an amenable number.

84672513 is a deficient number, since it is larger than the sum of its proper divisors (40768287).

84672513 is a wasteful number, since it uses less digits than its factorization.

84672513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136028 (or 3136022 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 84672513 is about 9201.7668412104. The cubic root of 84672513 is about 439.1175720225.

The spelling of 84672513 in words is "eighty-four million, six hundred seventy-two thousand, five hundred thirteen".