65434321 has 4 divisors (see below), whose sum is σ = 65470644. Its totient is φ = 65398000.

The previous prime is 65434307. The next prime is 65434331. The reversal of 65434321 is 12343456.

65434321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37344321 + 28090000 = 6111^2 + 5300^2 .

It is a cyclic number.

It is not a de Polignac number, because 65434321 - 2⁵ = 65434289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65434321.

It is not an unprimeable number, because it can be changed into a prime (65434301) 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, 15310 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (16367661).

Almost surely, 2^65434321 is an apocalyptic number.

It is an amenable number.

65434321 is a deficient number, since it is larger than the sum of its proper divisors (36323).

65434321 is a wasteful number, since it uses less digits than its factorization.

65434321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36322.

The product of its digits is 8640, while the sum is 28.

The square root of 65434321 is about 8089.1483482503. The cubic root of 65434321 is about 402.9661197189.

Adding to 65434321 its reverse (12343456), we get a palindrome (77777777).

The spelling of 65434321 in words is "sixty-five million, four hundred thirty-four thousand, three hundred twenty-one".