64468161 has 12 divisors (see below), whose sum is σ = 95102592. Its totient is φ = 42064056.

The previous prime is 64468153. The next prime is 64468163. The reversal of 64468161 is 16186446.

64468161 is a `hidden beast` number, since 644 + 6 + 8 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 64468161 - 2³ = 64468153 is a prime.

It is a super-2 number, since 2×64468161² = 8312287565443842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64468163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75781 + ... + 76626.

It is an arithmetic number, because the mean of its divisors is an integer number (7925216).

Almost surely, 2^64468161 is an apocalyptic number.

It is an amenable number.

64468161 is a deficient number, since it is larger than the sum of its proper divisors (30634431).

64468161 is a wasteful number, since it uses less digits than its factorization.

64468161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152460 (or 152457 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 64468161 is about 8029.2067478674. The cubic root of 64468161 is about 400.9729668366.

The spelling of 64468161 in words is "sixty-four million, four hundred sixty-eight thousand, one hundred sixty-one".