64913 has 4 divisors (see below), whose sum is σ = 65520. Its totient is φ = 64308.

The previous prime is 64901. The next prime is 64919. The reversal of 64913 is 31946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31946 = 2 ⋅15973.

It is a cyclic number.

It is not a de Polignac number, because 64913 - 2⁶ = 64849 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (64919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 372.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2⁶⁴⁹¹³ is an apocalyptic number.

It is an amenable number.

64913 is a deficient number, since it is larger than the sum of its proper divisors (607).

64913 is a wasteful number, since it uses less digits than its factorization.

64913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606.

The product of its digits is 648, while the sum is 23.

The square root of 64913 is about 254.7802975114. The cubic root of 64913 is about 40.1893109539.

The spelling of 64913 in words is "sixty-four thousand, nine hundred thirteen".