65390193 has 16 divisors (see below), whose sum is σ = 105681600. Its totient is φ = 39630240.

The previous prime is 65390159. The next prime is 65390201. The reversal of 65390193 is 39109356.

It is not a de Polignac number, because 65390193 - 2¹³ = 65382001 is a prime.

It is a super-3 number, since 3×65390193³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65390123) 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, 109788 + ... + 110381.

It is an arithmetic number, because the mean of its divisors is an integer number (6605100).

Almost surely, 2^65390193 is an apocalyptic number.

It is an amenable number.

65390193 is a deficient number, since it is larger than the sum of its proper divisors (40291407).

65390193 is a wasteful number, since it uses less digits than its factorization.

65390193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220189 (or 220183 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 65390193 is about 8086.4202834134. The cubic root of 65390193 is about 402.8755144244.

The spelling of 65390193 in words is "sixty-five million, three hundred ninety thousand, one hundred ninety-three".