65566193 has 16 divisors (see below), whose sum is σ = 81928320. Its totient is φ = 50976000.

The previous prime is 65566121. The next prime is 65566201. The reversal of 65566193 is 39166556.

It is a cyclic number.

It is not a de Polignac number, because 65566193 - 2⁸ = 65565937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65566193.

It is not an unprimeable number, because it can be changed into a prime (65566393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53993 + ... + 55193.

It is an arithmetic number, because the mean of its divisors is an integer number (5120520).

Almost surely, 2^65566193 is an apocalyptic number.

It is an amenable number.

65566193 is a deficient number, since it is larger than the sum of its proper divisors (16362127).

65566193 is a wasteful number, since it uses less digits than its factorization.

65566193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928.

The product of its digits is 145800, while the sum is 41.

The square root of 65566193 is about 8097.2954126671. The cubic root of 65566193 is about 403.2366418190.

The spelling of 65566193 in words is "sixty-five million, five hundred sixty-six thousand, one hundred ninety-three".