64274543 has 2 divisors, whose sum is σ = 64274544. Its totient is φ = 64274542.

The previous prime is 64274477. The next prime is 64274557. The reversal of 64274543 is 34547246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64274543 - 2¹⁶ = 64209007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64270543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32137271 + 32137272.

It is an arithmetic number, because the mean of its divisors is an integer number (32137272).

Almost surely, 2^64274543 is an apocalyptic number.

64274543 is a deficient number, since it is larger than the sum of its proper divisors (1).

64274543 is an equidigital number, since it uses as much as digits as its factorization.

64274543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 35.

The square root of 64274543 is about 8017.1405750429. The cubic root of 64274543 is about 400.5711486682.

The spelling of 64274543 in words is "sixty-four million, two hundred seventy-four thousand, five hundred forty-three".