543726649 has 2 divisors, whose sum is σ = 543726650. Its totient is φ = 543726648.

The previous prime is 543726619. The next prime is 543726653. The reversal of 543726649 is 946627345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532132624 + 11594025 = 23068^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 543726649 - 2¹³ = 543718457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 543726599 and 543726608.

It is not a weakly prime, because it can be changed into another prime (543726619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271863324 + 271863325.

It is an arithmetic number, because the mean of its divisors is an integer number (271863325).

Almost surely, 2^543726649 is an apocalyptic number.

It is an amenable number.

543726649 is a deficient number, since it is larger than the sum of its proper divisors (1).

543726649 is an equidigital number, since it uses as much as digits as its factorization.

543726649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 46.

The square root of 543726649 is about 23317.9469293504. The cubic root of 543726649 is about 816.1942665313.

The spelling of 543726649 in words is "five hundred forty-three million, seven hundred twenty-six thousand, six hundred forty-nine".