64221105 has 32 divisors (see below), whose sum is σ = 112492800. Its totient is φ = 31092480.

The previous prime is 64221103. The next prime is 64221127. The reversal of 64221105 is 50112246.

It is not a de Polignac number, because 64221105 - 2¹ = 64221103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64221103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9196 + ... + 14594.

It is an arithmetic number, because the mean of its divisors is an integer number (3515400).

Almost surely, 2^64221105 is an apocalyptic number.

64221105 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64221105 is a deficient number, since it is larger than the sum of its proper divisors (48271695).

64221105 is a wasteful number, since it uses less digits than its factorization.

64221105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 64221105 is about 8013.8071476671. The cubic root of 64221105 is about 400.4601059700.

The spelling of 64221105 in words is "sixty-four million, two hundred twenty-one thousand, one hundred five".