65973855 has 16 divisors (see below), whose sum is σ = 111767904. Its totient is φ = 33116160.

The previous prime is 65973847. The next prime is 65973877. The reversal of 65973855 is 55837956.

It is not a de Polignac number, because 65973855 - 2³ = 65973847 is a prime.

It is a super-2 number, since 2×65973855² = 8705099087122050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129106 + ... + 129615.

It is an arithmetic number, because the mean of its divisors is an integer number (6985494).

Almost surely, 2^65973855 is an apocalyptic number.

65973855 is a deficient number, since it is larger than the sum of its proper divisors (45794049).

65973855 is a wasteful number, since it uses less digits than its factorization.

65973855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258746.

The product of its digits is 1134000, while the sum is 48.

The square root of 65973855 is about 8122.4291317315. The cubic root of 65973855 is about 404.0706322768.

The spelling of 65973855 in words is "sixty-five million, nine hundred seventy-three thousand, eight hundred fifty-five".