65997365 has 12 divisors (see below), whose sum is σ = 92127276. Its totient is φ = 45255168.

The previous prime is 65997361. The next prime is 65997391. The reversal of 65997365 is 56379956.

It can be written as a sum of positive squares in 2 ways, for example, as 52388644 + 13608721 = 7238^2 + 3689^2 .

It is not a de Polignac number, because 65997365 - 2² = 65997361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65997361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134444 + ... + 134933.

It is an arithmetic number, because the mean of its divisors is an integer number (7677273).

Almost surely, 2^65997365 is an apocalyptic number.

It is an amenable number.

65997365 is a deficient number, since it is larger than the sum of its proper divisors (26129911).

65997365 is a wasteful number, since it uses less digits than its factorization.

65997365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269396 (or 269389 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 50.

The square root of 65997365 is about 8123.8762299779. The cubic root of 65997365 is about 404.1186238758.

The spelling of 65997365 in words is "sixty-five million, nine hundred ninety-seven thousand, three hundred sixty-five".