64431105 has 48 divisors (see below), whose sum is σ = 111404160. Its totient is φ = 31787008.

The previous prime is 64431083. The next prime is 64431121. The reversal of 64431105 is 50113446.

It is not a de Polignac number, because 64431105 - 2²² = 60236801 is a prime.

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 in 47 ways as a sum of consecutive naturals, for example, 385732 + ... + 385898.

It is an arithmetic number, because the mean of its divisors is an integer number (2320920).

Almost surely, 2^64431105 is an apocalyptic number.

It is an amenable number.

64431105 is a deficient number, since it is larger than the sum of its proper divisors (46973055).

64431105 is a wasteful number, since it uses less digits than its factorization.

64431105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 64431105 is about 8026.8988407728. The cubic root of 64431105 is about 400.8961263115.

The spelling of 64431105 in words is "sixty-four million, four hundred thirty-one thousand, one hundred five".