64449200 has 30 divisors (see below), whose sum is σ = 154840164. Its totient is φ = 25779520.

The previous prime is 64449191. The next prime is 64449221. The reversal of 64449200 is 294446.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80162 + ... + 80961.

Almost surely, 2^64449200 is an apocalyptic number.

It is an amenable number.

64449200 is an abundant number, since it is smaller than the sum of its proper divisors (90390964).

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

64449200 is a wasteful number, since it uses less digits than its factorization.

64449200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161141 (or 161130 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64449200 is about 8028.0259092756. The cubic root of 64449200 is about 400.9336523709.

The spelling of 64449200 in words is "sixty-four million, four hundred forty-nine thousand, two hundred".