596991 has 4 divisors (see below), whose sum is σ = 795992. Its totient is φ = 397992.

The previous prime is 596987. The next prime is 597031. The reversal of 596991 is 199695.

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

It is not a de Polignac number, because 596991 - 2² = 596987 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (596941) 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, 99496 + ... + 99501.

It is an arithmetic number, because the mean of its divisors is an integer number (198998).

2⁵⁹⁶⁹⁹¹ is an apocalyptic number.

596991 is a deficient number, since it is larger than the sum of its proper divisors (199001).

596991 is a wasteful number, since it uses less digits than its factorization.

596991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199000.

The product of its digits is 21870, while the sum is 39.

The square root of 596991 is about 772.6519268079. The cubic root of 596991 is about 84.2020363494.

The spelling of 596991 in words is "five hundred ninety-six thousand, nine hundred ninety-one".