64936613 has 24 divisors (see below), whose sum is σ = 79540992. Its totient is φ = 52756704.

The previous prime is 64936609. The next prime is 64936631. The reversal of 64936613 is 31663946.

It is not a de Polignac number, because 64936613 - 2² = 64936609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64936643) 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, 176756 + ... + 177122.

It is an arithmetic number, because the mean of its divisors is an integer number (3314208).

Almost surely, 2^64936613 is an apocalyptic number.

It is an amenable number.

64936613 is a deficient number, since it is larger than the sum of its proper divisors (14604379).

64936613 is a wasteful number, since it uses less digits than its factorization.

64936613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 554 counting only the distinct ones).

The product of its digits is 69984, while the sum is 38.

The square root of 64936613 is about 8058.3256945845. The cubic root of 64936613 is about 401.9418350208.

The spelling of 64936613 in words is "sixty-four million, nine hundred thirty-six thousand, six hundred thirteen".