64441067 has 4 divisors (see below), whose sum is σ = 68231736. Its totient is φ = 60650400.

The previous prime is 64441063. The next prime is 64441079. The reversal of 64441067 is 76014446.

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

It is a cyclic number.

It is not a de Polignac number, because 64441067 - 2² = 64441063 is a prime.

It is a super-2 number, since 2×64441067² = 8305302232196978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64441061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895309 + ... + 1895342.

It is an arithmetic number, because the mean of its divisors is an integer number (17057934).

Almost surely, 2^64441067 is an apocalyptic number.

64441067 is a deficient number, since it is larger than the sum of its proper divisors (3790669).

64441067 is a wasteful number, since it uses less digits than its factorization.

64441067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790668.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 64441067 is about 8027.5193553177. The cubic root of 64441067 is about 400.9167867332.

The spelling of 64441067 in words is "sixty-four million, four hundred forty-one thousand, sixty-seven".