64834517 has 24 divisors (see below), whose sum is σ = 77358240. Its totient is φ = 53817120.

The previous prime is 64834513. The next prime is 64834559. The reversal of 64834517 is 71543846.

It is not a de Polignac number, because 64834517 - 2² = 64834513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64834513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114878 + ... + 115440.

It is an arithmetic number, because the mean of its divisors is an integer number (3223260).

Almost surely, 2^64834517 is an apocalyptic number.

It is an amenable number.

64834517 is a deficient number, since it is larger than the sum of its proper divisors (12523723).

64834517 is a wasteful number, since it uses less digits than its factorization.

64834517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 622 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 64834517 is about 8051.9883879698. The cubic root of 64834517 is about 401.7310747270.

The spelling of 64834517 in words is "sixty-four million, eight hundred thirty-four thousand, five hundred seventeen".