65321913 has 8 divisors (see below), whose sum is σ = 88145568. Its totient is φ = 43023104.

The previous prime is 65321903. The next prime is 65321941. The reversal of 65321913 is 31912356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65321913 - 2⁵ = 65321881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65321903) 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 7 ways as a sum of consecutive naturals, for example, 130920 + ... + 131417.

It is an arithmetic number, because the mean of its divisors is an integer number (11018196).

Almost surely, 2^65321913 is an apocalyptic number.

It is an amenable number.

65321913 is a deficient number, since it is larger than the sum of its proper divisors (22823655).

65321913 is a wasteful number, since it uses less digits than its factorization.

65321913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262423.

The product of its digits is 4860, while the sum is 30.

The square root of 65321913 is about 8082.1972878667. The cubic root of 65321913 is about 402.7352389535.

The spelling of 65321913 in words is "sixty-five million, three hundred twenty-one thousand, nine hundred thirteen".