65623161 has 8 divisors (see below), whose sum is σ = 87542784. Its totient is φ = 43726160.

The previous prime is 65623157. The next prime is 65623193. The reversal of 65623161 is 16132656.

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 65623161 - 2² = 65623157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65623141) 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, 3016 + ... + 11846.

It is an arithmetic number, because the mean of its divisors is an integer number (10942848).

Almost surely, 2^65623161 is an apocalyptic number.

It is an amenable number.

65623161 is a deficient number, since it is larger than the sum of its proper divisors (21919623).

65623161 is a wasteful number, since it uses less digits than its factorization.

65623161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11311.

The product of its digits is 6480, while the sum is 30.

The square root of 65623161 is about 8100.8123666704. The cubic root of 65623161 is about 403.3533937309.

The spelling of 65623161 in words is "sixty-five million, six hundred twenty-three thousand, one hundred sixty-one".