64955543 has 2 divisors, whose sum is σ = 64955544. Its totient is φ = 64955542.

The previous prime is 64955533. The next prime is 64955549. The reversal of 64955543 is 34555946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64955543 - 2¹⁸ = 64693399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64955543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64955549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32477771 + 32477772.

It is an arithmetic number, because the mean of its divisors is an integer number (32477772).

Almost surely, 2^64955543 is an apocalyptic number.

64955543 is a deficient number, since it is larger than the sum of its proper divisors (1).

64955543 is an equidigital number, since it uses as much as digits as its factorization.

64955543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 41.

The square root of 64955543 is about 8059.5001706061. The cubic root of 64955543 is about 401.9808885909.

The spelling of 64955543 in words is "sixty-four million, nine hundred fifty-five thousand, five hundred forty-three".