65044661 has 8 divisors (see below), whose sum is σ = 71395104. Its totient is φ = 58767120.

The previous prime is 65044649. The next prime is 65044687. The reversal of 65044661 is 16644056.

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 65044661 - 2¹⁰ = 65043637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65044061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16346 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (8924388).

Almost surely, 2^65044661 is an apocalyptic number.

It is an amenable number.

65044661 is a deficient number, since it is larger than the sum of its proper divisors (6350443).

65044661 is a wasteful number, since it uses less digits than its factorization.

65044661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36451.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 65044661 is about 8065.0270303329. The cubic root of 65044661 is about 402.1646417675.

The spelling of 65044661 in words is "sixty-five million, forty-four thousand, six hundred sixty-one".