599966 has 4 divisors (see below), whose sum is σ = 899952. Its totient is φ = 299982.

The previous prime is 599959. The next prime is 599983. The reversal of 599966 is 669995.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 669995 = 5 ⋅133999.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

599966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149990 + ... + 149993.

It is an arithmetic number, because the mean of its divisors is an integer number (224988).

2⁵⁹⁹⁹⁶⁶ is an apocalyptic number.

599966 is a deficient number, since it is larger than the sum of its proper divisors (299986).

599966 is a wasteful number, since it uses less digits than its factorization.

599966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299985.

The product of its digits is 131220, while the sum is 44.

The square root of 599966 is about 774.5747220249. The cubic root of 599966 is about 84.3416733495.

It can be divided in two parts, 59996 and 6, that multiplied together give a triangular number (359976 = T₈₄₈).

The spelling of 599966 in words is "five hundred ninety-nine thousand, nine hundred sixty-six".