64809112 has 16 divisors (see below), whose sum is σ = 121623840. Its totient is φ = 32376096.

The previous prime is 64809103. The next prime is 64809119. The reversal of 64809112 is 21190846.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64809119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8538 + ... + 14230.

It is an arithmetic number, because the mean of its divisors is an integer number (7601490).

Almost surely, 2^64809112 is an apocalyptic number.

It is an amenable number.

64809112 is a deficient number, since it is larger than the sum of its proper divisors (56814728).

64809112 is a wasteful number, since it uses less digits than its factorization.

64809112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122 (or 7118 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 64809112 is about 8050.4106727545. The cubic root of 64809112 is about 401.6785959356.

Adding to 64809112 its reverse (21190846), we get a palindrome (85999958).

The spelling of 64809112 in words is "sixty-four million, eight hundred nine thousand, one hundred twelve".