612736543 has 4 divisors (see below), whose sum is σ = 614828088. Its totient is φ = 610645000.

The previous prime is 612736499. The next prime is 612736547. The reversal of 612736543 is 345637216.

612736543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612736543 - 2¹⁷ = 612605471 is a prime.

It is a super-2 number, since 2×612736543² = 750892142255181698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612736547) 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, 1045333 + ... + 1045918.

It is an arithmetic number, because the mean of its divisors is an integer number (153707022).

Almost surely, 2^612736543 is an apocalyptic number.

612736543 is a deficient number, since it is larger than the sum of its proper divisors (2091545).

612736543 is a wasteful number, since it uses less digits than its factorization.

612736543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091544.

The product of its digits is 90720, while the sum is 37.

The square root of 612736543 is about 24753.5157704921. The cubic root of 612736543 is about 849.3589367059.

The spelling of 612736543 in words is "six hundred twelve million, seven hundred thirty-six thousand, five hundred forty-three".