65397812 has 6 divisors (see below), whose sum is σ = 114446178. Its totient is φ = 32698904.

The previous prime is 65397811. The next prime is 65397841. The reversal of 65397812 is 21879356.

It can be written as a sum of positive squares in only one way, i.e., 54081316 + 11316496 = 7354^2 + 3364^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65397812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65397811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8174723 + ... + 8174730.

It is an arithmetic number, because the mean of its divisors is an integer number (19074363).

Almost surely, 2^65397812 is an apocalyptic number.

It is an amenable number.

65397812 is a deficient number, since it is larger than the sum of its proper divisors (49048366).

65397812 is a wasteful number, since it uses less digits than its factorization.

65397812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16349457 (or 16349455 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 65397812 is about 8086.8913681340. The cubic root of 65397812 is about 402.8911609569.

The spelling of 65397812 in words is "sixty-five million, three hundred ninety-seven thousand, eight hundred twelve".