64734563 has 2 divisors, whose sum is σ = 64734564. Its totient is φ = 64734562.

The previous prime is 64734559. The next prime is 64734569. The reversal of 64734563 is 36543746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64734563 - 2² = 64734559 is a prime.

It is not a weakly prime, because it can be changed into another prime (64734569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32367281 + 32367282.

It is an arithmetic number, because the mean of its divisors is an integer number (32367282).

Almost surely, 2^64734563 is an apocalyptic number.

64734563 is a deficient number, since it is larger than the sum of its proper divisors (1).

64734563 is an equidigital number, since it uses as much as digits as its factorization.

64734563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 38.

The square root of 64734563 is about 8045.7792040299. The cubic root of 64734563 is about 401.5245217849.

The spelling of 64734563 in words is "sixty-four million, seven hundred thirty-four thousand, five hundred sixty-three".