64534747 has 2 divisors, whose sum is σ = 64534748. Its totient is φ = 64534746.

The previous prime is 64534733. The next prime is 64534759. The reversal of 64534747 is 74743546.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64534747 is a prime.

It is not a weakly prime, because it can be changed into another prime (64534727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32267373 + 32267374.

It is an arithmetic number, because the mean of its divisors is an integer number (32267374).

Almost surely, 2^64534747 is an apocalyptic number.

64534747 is a deficient number, since it is larger than the sum of its proper divisors (1).

64534747 is an equidigital number, since it uses as much as digits as its factorization.

64534747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 40.

The square root of 64534747 is about 8033.3521645699. The cubic root of 64534747 is about 401.1109677698.

The spelling of 64534747 in words is "sixty-four million, five hundred thirty-four thousand, seven hundred forty-seven".