64998711 has 12 divisors (see below), whose sum is σ = 95019288. Its totient is φ = 42809904.

The previous prime is 64998683. The next prime is 64998721. The reversal of 64998711 is 11789946.

It is a happy number.

It is not a de Polignac number, because 64998711 - 2¹⁰ = 64997687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64998721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42760 + ... + 44253.

It is an arithmetic number, because the mean of its divisors is an integer number (7918274).

Almost surely, 2^64998711 is an apocalyptic number.

64998711 is a deficient number, since it is larger than the sum of its proper divisors (30020577).

64998711 is a wasteful number, since it uses less digits than its factorization.

64998711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87102 (or 87099 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 64998711 is about 8062.1778075158. The cubic root of 64998711 is about 402.0699180385.

The spelling of 64998711 in words is "sixty-four million, nine hundred ninety-eight thousand, seven hundred eleven".