65091168 has 48 divisors (see below), whose sum is σ = 189851760. Its totient is φ = 21696768.

The previous prime is 65091157. The next prime is 65091197. The reversal of 65091168 is 86119056.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36805 + ... + 38532.

It is an arithmetic number, because the mean of its divisors is an integer number (3955245).

Almost surely, 2^65091168 is an apocalyptic number.

It is an amenable number.

65091168 is an abundant number, since it is smaller than the sum of its proper divisors (124760592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65091168 is a wasteful number, since it uses less digits than its factorization.

65091168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75356 (or 75342 counting only the distinct ones).

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

The square root of 65091168 is about 8067.9097664761. The cubic root of 65091168 is about 402.2604683110.

The spelling of 65091168 in words is "sixty-five million, ninety-one thousand, one hundred sixty-eight".