612993 has 4 divisors (see below), whose sum is σ = 817328. Its totient is φ = 408660.

The previous prime is 612977. The next prime is 613007. The reversal of 612993 is 399216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 612993 - 2⁴ = 612977 is a prime.

It is a super-3 number, since 3×612993³ = 691015517823331971, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612993.

It is not an unprimeable number, because it can be changed into a prime (612923) 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, 102163 + ... + 102168.

It is an arithmetic number, because the mean of its divisors is an integer number (204332).

2⁶¹²⁹⁹³ is an apocalyptic number.

It is an amenable number.

612993 is a deficient number, since it is larger than the sum of its proper divisors (204335).

612993 is a wasteful number, since it uses less digits than its factorization.

612993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204334.

The product of its digits is 2916, while the sum is 30.

The square root of 612993 is about 782.9386949181. The cubic root of 612993 is about 84.9477418112.

The spelling of 612993 in words is "six hundred twelve thousand, nine hundred ninety-three".