84870571 has 8 divisors (see below), whose sum is σ = 86662800. Its totient is φ = 83096832.

The previous prime is 84870557. The next prime is 84870593. The reversal of 84870571 is 17507848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84870571 - 2²¹ = 82773419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84870551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855 + ... + 13903.

It is an arithmetic number, because the mean of its divisors is an integer number (10832850).

Almost surely, 2^84870571 is an apocalyptic number.

84870571 is a deficient number, since it is larger than the sum of its proper divisors (1792229).

84870571 is a wasteful number, since it uses less digits than its factorization.

84870571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 84870571 is about 9212.5225101489. The cubic root of 84870571 is about 439.4596862920.

The spelling of 84870571 in words is "eighty-four million, eight hundred seventy thousand, five hundred seventy-one".