84672415 has 4 divisors (see below), whose sum is σ = 101606904. Its totient is φ = 67737928.

The previous prime is 84672409. The next prime is 84672443. The reversal of 84672415 is 51427648.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84672415 - 2¹⁵ = 84639647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8467237 + ... + 8467246.

It is an arithmetic number, because the mean of its divisors is an integer number (25401726).

Almost surely, 2^84672415 is an apocalyptic number.

84672415 is a deficient number, since it is larger than the sum of its proper divisors (16934489).

84672415 is a wasteful number, since it uses less digits than its factorization.

84672415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16934488.

The product of its digits is 53760, while the sum is 37.

The square root of 84672415 is about 9201.7615161446. The cubic root of 84672415 is about 439.1174026108.

The spelling of 84672415 in words is "eighty-four million, six hundred seventy-two thousand, four hundred fifteen".