612998 has 8 divisors (see below), whose sum is σ = 937008. Its totient is φ = 300664.

The previous prime is 612977. The next prime is 613007. The reversal of 612998 is 899216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (117126).

2⁶¹²⁹⁹⁸ is an apocalyptic number.

612998 is the 419-th centered heptagonal number.

612998 is a deficient number, since it is larger than the sum of its proper divisors (324010).

612998 is a wasteful number, since it uses less digits than its factorization.

612998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838.

The product of its digits is 7776, while the sum is 35.

The square root of 612998 is about 782.9418880096. The cubic root of 612998 is about 84.9479727750.

The spelling of 612998 in words is "six hundred twelve thousand, nine hundred ninety-eight".