612543 has 8 divisors (see below), whose sum is σ = 828208. Its totient is φ = 402624.

The previous prime is 612511. The next prime is 612553. The reversal of 612543 is 345216.

It is a happy number.

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

It is not a de Polignac number, because 612543 - 2⁵ = 612511 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 612543.

It is not an unprimeable number, because it can be changed into a prime (612553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (103526).

2⁶¹²⁵⁴³ is an apocalyptic number.

612543 is a deficient number, since it is larger than the sum of its proper divisors (215665).

612543 is a wasteful number, since it uses less digits than its factorization.

612543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its digits is 720, while the sum is 21.

The square root of 612543 is about 782.6512633351. The cubic root of 612543 is about 84.9269499253.

Adding to 612543 its reverse (345216), we get a palindrome (957759).

The spelling of 612543 in words is "six hundred twelve thousand, five hundred forty-three".