64441111 has 8 divisors (see below), whose sum is σ = 73743264. Its totient is φ = 55163040.

The previous prime is 64441099. The next prime is 64441123. The reversal of 64441111 is 11114446.

It is an interprime number because it is at equal distance from previous prime (64441099) and next prime (64441123).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64441111 - 2⁵ = 64441079 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64441151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141 + ... + 11353.

It is an arithmetic number, because the mean of its divisors is an integer number (9217908).

Almost surely, 2^64441111 is an apocalyptic number.

64441111 is a deficient number, since it is larger than the sum of its proper divisors (9302153).

64441111 is a wasteful number, since it uses less digits than its factorization.

64441111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12041.

The product of its digits is 384, while the sum is 22.

The square root of 64441111 is about 8027.5220958899. The cubic root of 64441111 is about 400.9168779811.

Adding to 64441111 its reverse (11114446), we get a palindrome (75555557).

The spelling of 64441111 in words is "sixty-four million, four hundred forty-one thousand, one hundred eleven".