65040212 has 6 divisors (see below), whose sum is σ = 113820378. Its totient is φ = 32520104.

The previous prime is 65040203. The next prime is 65040229. The reversal of 65040212 is 21204056.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 61528336 + 3511876 = 7844^2 + 1874^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8130023 + ... + 8130030.

It is an arithmetic number, because the mean of its divisors is an integer number (18970063).

Almost surely, 2^65040212 is an apocalyptic number.

It is an amenable number.

65040212 is a deficient number, since it is larger than the sum of its proper divisors (48780166).

65040212 is a wasteful number, since it uses less digits than its factorization.

65040212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16260057 (or 16260055 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 65040212 is about 8064.7512050900. The cubic root of 65040212 is about 402.1554723176.

Adding to 65040212 its reverse (21204056), we get a palindrome (86244268).

The spelling of 65040212 in words is "sixty-five million, forty thousand, two hundred twelve".