65993265 has 64 divisors (see below), whose sum is σ = 130529280. Its totient is φ = 31415040.

The previous prime is 65993219. The next prime is 65993281. The reversal of 65993265 is 56239956.

It is not a de Polignac number, because 65993265 - 2²⁴ = 49216049 is a prime.

It is a super-2 number, since 2×65993265² = 8710222050720450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65993265.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53799 + ... + 55011.

It is an arithmetic number, because the mean of its divisors is an integer number (2039520).

Almost surely, 2^65993265 is an apocalyptic number.

65993265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65993265 is a deficient number, since it is larger than the sum of its proper divisors (64536015).

65993265 is a wasteful number, since it uses less digits than its factorization.

65993265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271 (or 1265 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 65993265 is about 8123.6238834648. The cubic root of 65993265 is about 404.1102552554.

The spelling of 65993265 in words is "sixty-five million, nine hundred ninety-three thousand, two hundred sixty-five".