65421373 has 2 divisors, whose sum is σ = 65421374. Its totient is φ = 65421372.

The previous prime is 65421353. The next prime is 65421397. The reversal of 65421373 is 37312456.

65421373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34363044 + 31058329 = 5862^2 + 5573^2 .

It is a cyclic number.

It is not a de Polignac number, because 65421373 - 2¹⁷ = 65290301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65421353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32710686 + 32710687.

It is an arithmetic number, because the mean of its divisors is an integer number (32710687).

Almost surely, 2^65421373 is an apocalyptic number.

It is an amenable number.

65421373 is a deficient number, since it is larger than the sum of its proper divisors (1).

65421373 is an equidigital number, since it uses as much as digits as its factorization.

65421373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 65421373 is about 8088.3479771830. The cubic root of 65421373 is about 402.9395386147.

The spelling of 65421373 in words is "sixty-five million, four hundred twenty-one thousand, three hundred seventy-three".