64533161 has 8 divisors (see below), whose sum is σ = 80457024. Its totient is φ = 50285520.

The previous prime is 64533151. The next prime is 64533163. The reversal of 64533161 is 16133546.

It is a happy number.

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 64533161 - 2⁶ = 64533097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64533163) 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, 418970 + ... + 419123.

It is an arithmetic number, because the mean of its divisors is an integer number (10057128).

Almost surely, 2^64533161 is an apocalyptic number.

It is an amenable number.

64533161 is a deficient number, since it is larger than the sum of its proper divisors (15923863).

64533161 is a wasteful number, since it uses less digits than its factorization.

64533161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838111.

The product of its digits is 6480, while the sum is 29.

The square root of 64533161 is about 8033.2534505019. The cubic root of 64533161 is about 401.1076818542.

The spelling of 64533161 in words is "sixty-four million, five hundred thirty-three thousand, one hundred sixty-one".