64440105 has 16 divisors (see below), whose sum is σ = 103360320. Its totient is φ = 34282688.

The previous prime is 64440071. The next prime is 64440113. The reversal of 64440105 is 50104446.

It is a cyclic number.

It is not a de Polignac number, because 64440105 - 2⁹ = 64439593 is a prime.

It is a super-2 number, since 2×64440105² = 8305054264822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159 + ... + 11411.

It is an arithmetic number, because the mean of its divisors is an integer number (6460020).

Almost surely, 2^64440105 is an apocalyptic number.

It is an amenable number.

64440105 is a deficient number, since it is larger than the sum of its proper divisors (38920215).

64440105 is a wasteful number, since it uses less digits than its factorization.

64440105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10680.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 64440105 is about 8027.4594362102. The cubic root of 64440105 is about 400.9147917121.

The spelling of 64440105 in words is "sixty-four million, four hundred forty thousand, one hundred five".