84785567 has 4 divisors (see below), whose sum is σ = 88471920. Its totient is φ = 81099216.

The previous prime is 84785563. The next prime is 84785609. The reversal of 84785567 is 76558748.

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 84785567 - 2² = 84785563 is a prime.

It is a super-2 number, since 2×84785567² = 14377184743022978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84785563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843142 + ... + 1843187.

It is an arithmetic number, because the mean of its divisors is an integer number (22117980).

Almost surely, 2^84785567 is an apocalyptic number.

84785567 is a deficient number, since it is larger than the sum of its proper divisors (3686353).

84785567 is a wasteful number, since it uses less digits than its factorization.

84785567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686352.

The product of its digits is 1881600, while the sum is 50.

The square root of 84785567 is about 9207.9078514069. The cubic root of 84785567 is about 439.3129204217.

The spelling of 84785567 in words is "eighty-four million, seven hundred eighty-five thousand, five hundred sixty-seven".