65363421 has 4 divisors (see below), whose sum is σ = 87151232. Its totient is φ = 43575612.

The previous prime is 65363383. The next prime is 65363437. The reversal of 65363421 is 12436356.

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.

It is not a de Polignac number, because 65363421 - 2⁶ = 65363357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65363821) 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, 10893901 + ... + 10893906.

It is an arithmetic number, because the mean of its divisors is an integer number (21787808).

Almost surely, 2^65363421 is an apocalyptic number.

It is an amenable number.

65363421 is a deficient number, since it is larger than the sum of its proper divisors (21787811).

65363421 is a wasteful number, since it uses less digits than its factorization.

65363421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21787810.

The product of its digits is 12960, while the sum is 30.

The square root of 65363421 is about 8084.7647461135. The cubic root of 65363421 is about 402.8205252633.

Adding to 65363421 its reverse (12436356), we get a palindrome (77799777).

The spelling of 65363421 in words is "sixty-five million, three hundred sixty-three thousand, four hundred twenty-one".