612813 has 8 divisors (see below), whose sum is σ = 820800. Its totient is φ = 406688.

The previous prime is 612811. The next prime is 612817. The reversal of 612813 is 318216.

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

It is a cyclic number.

It is not a de Polignac number, because 612813 - 2¹ = 612811 is a prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 612813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612811) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 793 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2⁶¹²⁸¹³ is an apocalyptic number.

It is an amenable number.

612813 is a deficient number, since it is larger than the sum of its proper divisors (207987).

612813 is a wasteful number, since it uses less digits than its factorization.

612813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 288, while the sum is 21.

The square root of 612813 is about 782.8237349493. The cubic root of 612813 is about 84.9394262783.

The spelling of 612813 in words is "six hundred twelve thousand, eight hundred thirteen".