65321047 has 16 divisors (see below), whose sum is σ = 72813312. Its totient is φ = 58101120.

The previous prime is 65321041. The next prime is 65321051. The reversal of 65321047 is 74012356.

It is not a de Polignac number, because 65321047 - 2¹¹ = 65318999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65321041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193663 + ... + 193999.

It is an arithmetic number, because the mean of its divisors is an integer number (4550832).

Almost surely, 2^65321047 is an apocalyptic number.

65321047 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

65321047 is a deficient number, since it is larger than the sum of its proper divisors (7492265).

65321047 is a wasteful number, since it uses less digits than its factorization.

65321047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 65321047 is about 8082.1437131494. The cubic root of 65321047 is about 402.7334592023.

The spelling of 65321047 in words is "sixty-five million, three hundred twenty-one thousand, forty-seven".