84672565 has 4 divisors (see below), whose sum is σ = 101607084. Its totient is φ = 67738048.

The previous prime is 84672559. The next prime is 84672571. The reversal of 84672565 is 56527648.

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

It is an interprime number because it is at equal distance from previous prime (84672559) and next prime (84672571).

It can be written as a sum of positive squares in 2 ways, for example, as 20304036 + 64368529 = 4506^2 + 8023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84672565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8467252 + ... + 8467261.

It is an arithmetic number, because the mean of its divisors is an integer number (25401771).

Almost surely, 2^84672565 is an apocalyptic number.

It is an amenable number.

84672565 is a deficient number, since it is larger than the sum of its proper divisors (16934519).

84672565 is a wasteful number, since it uses less digits than its factorization.

84672565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16934518.

The product of its digits is 403200, while the sum is 43.

The square root of 84672565 is about 9201.7696667543. The cubic root of 84672565 is about 439.1176619144.

The spelling of 84672565 in words is "eighty-four million, six hundred seventy-two thousand, five hundred sixty-five".