84681593 has 4 divisors (see below), whose sum is σ = 84762468. Its totient is φ = 84600720.

The previous prime is 84681589. The next prime is 84681671. The reversal of 84681593 is 39518648.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73479184 + 11202409 = 8572^2 + 3347^2 .

It is a cyclic number.

It is not a de Polignac number, because 84681593 - 2² = 84681589 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84681503) 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, 38846 + ... + 40967.

It is an arithmetic number, because the mean of its divisors is an integer number (21190617).

Almost surely, 2^84681593 is an apocalyptic number.

It is an amenable number.

84681593 is a deficient number, since it is larger than the sum of its proper divisors (80875).

84681593 is a wasteful number, since it uses less digits than its factorization.

84681593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80874.

The product of its digits is 207360, while the sum is 44.

The square root of 84681593 is about 9202.2602114915. The cubic root of 84681593 is about 439.1332679664.

The spelling of 84681593 in words is "eighty-four million, six hundred eighty-one thousand, five hundred ninety-three".