65423661 has 8 divisors (see below), whose sum is σ = 91024320. Its totient is φ = 41719392.

The previous prime is 65423641. The next prime is 65423689. The reversal of 65423661 is 16632456.

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

It is not a de Polignac number, because 65423661 - 2¹¹ = 65421613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65423641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474016 + ... + 474153.

It is an arithmetic number, because the mean of its divisors is an integer number (11378040).

Almost surely, 2^65423661 is an apocalyptic number.

It is an amenable number.

65423661 is a deficient number, since it is larger than the sum of its proper divisors (25600659).

65423661 is a wasteful number, since it uses less digits than its factorization.

65423661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948195.

The product of its digits is 25920, while the sum is 33.

The square root of 65423661 is about 8088.4894139759. The cubic root of 65423661 is about 402.9442359324.

The spelling of 65423661 in words is "sixty-five million, four hundred twenty-three thousand, six hundred sixty-one".