84086057 has 16 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 75137040.

The previous prime is 84086017. The next prime is 84086069. The reversal of 84086057 is 75068048.

It is not a de Polignac number, because 84086057 - 2¹⁸ = 83823913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84086057.

It is not an unprimeable number, because it can be changed into a prime (84086017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234044 + ... + 234402.

It is an arithmetic number, because the mean of its divisors is an integer number (5832000).

Almost surely, 2^84086057 is an apocalyptic number.

It is an amenable number.

84086057 is a deficient number, since it is larger than the sum of its proper divisors (9225943).

84086057 is a wasteful number, since it uses less digits than its factorization.

84086057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 84086057 is about 9169.8449823320. The cubic root of 84086057 is about 438.1014217848.

Subtracting from 84086057 its reverse (75068048), we obtain a square (9018009 = 3003²).

The spelling of 84086057 in words is "eighty-four million, eighty-six thousand, fifty-seven".