64163649 has 8 divisors (see below), whose sum is σ = 93328992. Its totient is φ = 38887040.

The previous prime is 64163639. The next prime is 64163699. The reversal of 64163649 is 94636146.

64163649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64163649 - 2⁴ = 64163633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64163639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972144 + ... + 972209.

It is an arithmetic number, because the mean of its divisors is an integer number (11666124).

Almost surely, 2^64163649 is an apocalyptic number.

It is an amenable number.

64163649 is a deficient number, since it is larger than the sum of its proper divisors (29165343).

64163649 is a wasteful number, since it uses less digits than its factorization.

64163649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944367.

The product of its digits is 93312, while the sum is 39.

The square root of 64163649 is about 8010.2215325171. The cubic root of 64163649 is about 400.3406452364.

The spelling of 64163649 in words is "sixty-four million, one hundred sixty-three thousand, six hundred forty-nine".