65891601 has 12 divisors (see below), whose sum is σ = 100186320. Its totient is φ = 41615640.

The previous prime is 65891593. The next prime is 65891629. The reversal of 65891601 is 10619856.

It is not a de Polignac number, because 65891601 - 2³ = 65891593 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65891101) 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, 192495 + ... + 192836.

It is an arithmetic number, because the mean of its divisors is an integer number (8348860).

Almost surely, 2^65891601 is an apocalyptic number.

It is an amenable number.

65891601 is a deficient number, since it is larger than the sum of its proper divisors (34294719).

65891601 is a wasteful number, since it uses less digits than its factorization.

65891601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385356 (or 385353 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 65891601 is about 8117.3641657868. The cubic root of 65891601 is about 403.9026351813.

The spelling of 65891601 in words is "sixty-five million, eight hundred ninety-one thousand, six hundred one".