65955191 has 6 divisors (see below), whose sum is σ = 68948040. Its totient is φ = 63087068.

The previous prime is 65955187. The next prime is 65955199. The reversal of 65955191 is 19155956.

It is not a de Polignac number, because 65955191 - 2² = 65955187 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 (65955199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61811 + ... + 62868.

It is an arithmetic number, because the mean of its divisors is an integer number (11491340).

Almost surely, 2^65955191 is an apocalyptic number.

65955191 is a deficient number, since it is larger than the sum of its proper divisors (2992849).

65955191 is a wasteful number, since it uses less digits than its factorization.

65955191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124725 (or 124702 counting only the distinct ones).

The product of its digits is 60750, while the sum is 41.

The square root of 65955191 is about 8121.2801330825. The cubic root of 65955191 is about 404.0325248297.

The spelling of 65955191 in words is "sixty-five million, nine hundred fifty-five thousand, one hundred ninety-one".