64453812 has 24 divisors (see below), whose sum is σ = 150677856. Its totient is φ = 21443808.

The previous prime is 64453789. The next prime is 64453819. The reversal of 64453812 is 21835446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64453819) 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 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 11505.

It is an arithmetic number, because the mean of its divisors is an integer number (6278244).

Almost surely, 2^64453812 is an apocalyptic number.

It is an amenable number.

64453812 is an abundant number, since it is smaller than the sum of its proper divisors (86224044).

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

64453812 is a wasteful number, since it uses less digits than its factorization.

64453812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207 (or 10205 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 64453812 is about 8028.3131478537. The cubic root of 64453812 is about 400.9432157785.

The spelling of 64453812 in words is "sixty-four million, four hundred fifty-three thousand, eight hundred twelve".