64455450 has 48 divisors (see below), whose sum is σ = 160602816. Its totient is φ = 17107200.

The previous prime is 64455427. The next prime is 64455451. The reversal of 64455450 is 5455446.

It is not an unprimeable number, because it can be changed into a prime (64455451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35259 + ... + 37041.

It is an arithmetic number, because the mean of its divisors is an integer number (3345892).

Almost surely, 2^64455450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64455450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80301408).

64455450 is an abundant number, since it is smaller than the sum of its proper divisors (96147366).

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

64455450 is a wasteful number, since it uses less digits than its factorization.

64455450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 64455450 is about 8028.4151611635. The cubic root of 64455450 is about 400.9466122128.

The spelling of 64455450 in words is "sixty-four million, four hundred fifty-five thousand, four hundred fifty".