84856557 has 8 divisors (see below), whose sum is σ = 113266080. Its totient is φ = 56509040.

The previous prime is 84856549. The next prime is 84856613. The reversal of 84856557 is 75565848.

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 84856557 - 2³ = 84856549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84856547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12207 + ... + 17852.

It is an arithmetic number, because the mean of its divisors is an integer number (14158260).

Almost surely, 2^84856557 is an apocalyptic number.

It is an amenable number.

84856557 is a deficient number, since it is larger than the sum of its proper divisors (28409523).

84856557 is a wasteful number, since it uses less digits than its factorization.

84856557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31003.

The product of its digits is 1344000, while the sum is 48.

The square root of 84856557 is about 9211.7618835921. The cubic root of 84856557 is about 439.4354968037.

The spelling of 84856557 in words is "eighty-four million, eight hundred fifty-six thousand, five hundred fifty-seven".