84864057 has 4 divisors (see below), whose sum is σ = 113152080. Its totient is φ = 56576036.

The previous prime is 84864041. The next prime is 84864061. The reversal of 84864057 is 75046848.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84864057 - 2⁴ = 84864041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84864037) 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, 14144007 + ... + 14144012.

It is an arithmetic number, because the mean of its divisors is an integer number (28288020).

Almost surely, 2^84864057 is an apocalyptic number.

It is an amenable number.

84864057 is a deficient number, since it is larger than the sum of its proper divisors (28288023).

84864057 is a wasteful number, since it uses less digits than its factorization.

84864057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28288022.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 84864057 is about 9212.1689628447. The cubic root of 84864057 is about 439.4484428437.

The spelling of 84864057 in words is "eighty-four million, eight hundred sixty-four thousand, fifty-seven".