65401212 has 12 divisors (see below), whose sum is σ = 152602856. Its totient is φ = 21800400.

The previous prime is 65401207. The next prime is 65401229. The reversal of 65401212 is 21210456.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2725039 + ... + 2725062.

Almost surely, 2^65401212 is an apocalyptic number.

It is an amenable number.

65401212 is an abundant number, since it is smaller than the sum of its proper divisors (87201644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65401212 is a wasteful number, since it uses less digits than its factorization.

65401212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450108 (or 5450106 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 65401212 is about 8087.1015821492. The cubic root of 65401212 is about 402.8981428735.

Adding to 65401212 its reverse (21210456), we get a palindrome (86611668).

The spelling of 65401212 in words is "sixty-five million, four hundred one thousand, two hundred twelve".