65940165 has 48 divisors (see below), whose sum is σ = 121193280. Its totient is φ = 33073920.

The previous prime is 65940163. The next prime is 65940167. The reversal of 65940165 is 56104956.

65940165 is a `hidden beast` number, since 6 + 594 + 0 + 1 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (65940163) and next prime (65940167).

It is not a de Polignac number, because 65940165 - 2¹ = 65940163 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65940163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199050 + ... + 199380.

It is an arithmetic number, because the mean of its divisors is an integer number (2524860).

Almost surely, 2^65940165 is an apocalyptic number.

It is an amenable number.

65940165 is a deficient number, since it is larger than the sum of its proper divisors (55253115).

65940165 is a wasteful number, since it uses less digits than its factorization.

65940165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 65940165 is about 8120.3549799254. The cubic root of 65940165 is about 404.0018400890.

The spelling of 65940165 in words is "sixty-five million, nine hundred forty thousand, one hundred sixty-five".