65440412 has 24 divisors (see below), whose sum is σ = 122927616. Its totient is φ = 30371328.

The previous prime is 65440399. The next prime is 65440421. The reversal of 65440412 is 21404456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628 + ... + 11555.

It is an arithmetic number, because the mean of its divisors is an integer number (5121984).

Almost surely, 2^65440412 is an apocalyptic number.

It is an amenable number.

65440412 is a deficient number, since it is larger than the sum of its proper divisors (57487204).

65440412 is a wasteful number, since it uses less digits than its factorization.

65440412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13277 (or 13275 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 65440412 is about 8089.5248315337. The cubic root of 65440412 is about 402.9786227929.

Adding to 65440412 its reverse (21404456), we get a palindrome (86844868).

The spelling of 65440412 in words is "sixty-five million, four hundred forty thousand, four hundred twelve".