64111012 has 72 divisors (see below), whose sum is σ = 140652288. Its totient is φ = 25401600.

The previous prime is 64111001. The next prime is 64111013. The reversal of 64111012 is 21011146.

It is a super-2 number, since 2×64111012² = 8220443719328288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64111013) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 236437 + ... + 236707.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 2^64111012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70326144).

64111012 is an abundant number, since it is smaller than the sum of its proper divisors (76541276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64111012 is a wasteful number, since it uses less digits than its factorization.

64111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 64111012 is about 8006.9352438995. The cubic root of 64111012 is about 400.2311414084.

Adding to 64111012 its reverse (21011146), we get a palindrome (85122158).

The spelling of 64111012 in words is "sixty-four million, one hundred eleven thousand, twelve".