65641055 has 8 divisors (see below), whose sum is σ = 78890352. Its totient is φ = 52432128.

The previous prime is 65641033. The next prime is 65641061. The reversal of 65641055 is 55014656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65641055 - 2¹⁶ = 65575519 is a prime.

It is a super-3 number, since 3×65641055³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6389 + ... + 13118.

It is an arithmetic number, because the mean of its divisors is an integer number (9861294).

Almost surely, 2^65641055 is an apocalyptic number.

65641055 is a deficient number, since it is larger than the sum of its proper divisors (13249297).

65641055 is a wasteful number, since it uses less digits than its factorization.

65641055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20185.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 65641055 is about 8101.9167485232. The cubic root of 65641055 is about 403.3900522805.

The spelling of 65641055 in words is "sixty-five million, six hundred forty-one thousand, fifty-five".