64660105 has 4 divisors (see below), whose sum is σ = 77592132. Its totient is φ = 51728080.

The previous prime is 64660093. The next prime is 64660117. The reversal of 64660105 is 50106646.

64660105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64660093) and next prime (64660117).

It can be written as a sum of positive squares in 2 ways, for example, as 30869136 + 33790969 = 5556^2 + 5813^2 .

It is not a de Polignac number, because 64660105 - 2⁵ = 64660073 is a prime.

It is a super-2 number, since 2×64660105² = 8361858357222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6466006 + ... + 6466015.

It is an arithmetic number, because the mean of its divisors is an integer number (19398033).

Almost surely, 2^64660105 is an apocalyptic number.

It is an amenable number.

64660105 is a deficient number, since it is larger than the sum of its proper divisors (12932027).

64660105 is a wasteful number, since it uses less digits than its factorization.

64660105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12932026.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 64660105 is about 8041.1507261088. The cubic root of 64660105 is about 401.3705175908.

The spelling of 64660105 in words is "sixty-four million, six hundred sixty thousand, one hundred five".