64534147 has 2 divisors, whose sum is σ = 64534148. Its totient is φ = 64534146.

The previous prime is 64534111. The next prime is 64534153. The reversal of 64534147 is 74143546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64534147 - 2¹¹ = 64532099 is a prime.

It is a super-2 number, since 2×64534147² = 8329312258035218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64534177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32267073 + 32267074.

It is an arithmetic number, because the mean of its divisors is an integer number (32267074).

Almost surely, 2^64534147 is an apocalyptic number.

64534147 is a deficient number, since it is larger than the sum of its proper divisors (1).

64534147 is an equidigital number, since it uses as much as digits as its factorization.

64534147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 64534147 is about 8033.3148201723. The cubic root of 64534147 is about 401.1097246807.

The spelling of 64534147 in words is "sixty-four million, five hundred thirty-four thousand, one hundred forty-seven".