64279168 has 16 divisors (see below), whose sum is σ = 128056410. Its totient is φ = 32139520.

The previous prime is 64279139. The next prime is 64279199. The reversal of 64279168 is 86197246.

It can be written as a sum of positive squares in only one way, i.e., 58859584 + 5419584 = 7672^2 + 2328^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×64279168² = 8263622877544448, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 250963 + ... + 251218.

Almost surely, 2^64279168 is an apocalyptic number.

It is an amenable number.

64279168 is a deficient number, since it is larger than the sum of its proper divisors (63777242).

64279168 is an equidigital number, since it uses as much as digits as its factorization.

64279168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502195 (or 502183 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 64279168 is about 8017.4290143412. The cubic root of 64279168 is about 400.5807563969.

The spelling of 64279168 in words is "sixty-four million, two hundred seventy-nine thousand, one hundred sixty-eight".