64516161 has 8 divisors (see below), whose sum is σ = 86142784. Its totient is φ = 42950160.

The previous prime is 64516147. The next prime is 64516163. The reversal of 64516161 is 16161546.

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

It is not a de Polignac number, because 64516161 - 2⁵ = 64516129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64516163) 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, 12610 + ... + 16971.

It is an arithmetic number, because the mean of its divisors is an integer number (10767848).

Almost surely, 2^64516161 is an apocalyptic number.

It is an amenable number.

64516161 is a deficient number, since it is larger than the sum of its proper divisors (21626623).

64516161 is a wasteful number, since it uses less digits than its factorization.

64516161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30311.

The product of its digits is 4320, while the sum is 30.

The square root of 64516161 is about 8032.1952790006. The cubic root of 64516161 is about 401.0724574345.

The spelling of 64516161 in words is "sixty-four million, five hundred sixteen thousand, one hundred sixty-one".