65040312 has 16 divisors (see below), whose sum is σ = 162600840. Its totient is φ = 21680096.

The previous prime is 65040307. The next prime is 65040323. The reversal of 65040312 is 21304056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354983 + ... + 1355030.

Almost surely, 2^65040312 is an apocalyptic number.

It is an amenable number.

65040312 is an abundant number, since it is smaller than the sum of its proper divisors (97560528).

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

65040312 is a wasteful number, since it uses less digits than its factorization.

65040312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710022 (or 2710018 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 65040312 is about 8064.7574049069. The cubic root of 65040312 is about 402.1556784236.

Adding to 65040312 its reverse (21304056), we get a palindrome (86344368).

The spelling of 65040312 in words is "sixty-five million, forty thousand, three hundred twelve".