64541111 has 8 divisors (see below), whose sum is σ = 66086544. Its totient is φ = 63011520.

The previous prime is 64541069. The next prime is 64541117. The reversal of 64541111 is 11114546.

It is a happy number.

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 64541111 - 2¹⁰ = 64540087 is a prime.

It is a super-2 number, since 2×64541111² = 8331110018228642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64541117) 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, 4496 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (8260818).

Almost surely, 2^64541111 is an apocalyptic number.

64541111 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

64541111 is a deficient number, since it is larger than the sum of its proper divisors (1545433).

64541111 is a wasteful number, since it uses less digits than its factorization.

64541111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921.

The product of its digits is 480, while the sum is 23.

The square root of 64541111 is about 8033.7482534618. The cubic root of 64541111 is about 401.1241523276.

Adding to 64541111 its reverse (11114546), we get a palindrome (75655657).

The spelling of 64541111 in words is "sixty-four million, five hundred forty-one thousand, one hundred eleven".