65055661 has 16 divisors (see below), whose sum is σ = 75644928. Its totient is φ = 55356400.

The previous prime is 65055647. The next prime is 65055709. The reversal of 65055661 is 16655056.

It is not a de Polignac number, because 65055661 - 2²⁵ = 31501229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65055061) 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, 9156 + ... + 14626.

It is an arithmetic number, because the mean of its divisors is an integer number (4727808).

Almost surely, 2^65055661 is an apocalyptic number.

It is an amenable number.

65055661 is a deficient number, since it is larger than the sum of its proper divisors (10589267).

65055661 is a wasteful number, since it uses less digits than its factorization.

65055661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 65055661 is about 8065.7089582999. The cubic root of 65055661 is about 402.1873111234.

The spelling of 65055661 in words is "sixty-five million, fifty-five thousand, six hundred sixty-one".