64455248 has 90 divisors (see below), whose sum is σ = 149392782. Its totient is φ = 26906880.

The previous prime is 64455247. The next prime is 64455257. The reversal of 64455248 is 84255446.

It can be written as a sum of positive squares in 3 ways, for example, as 6512704 + 57942544 = 2552^2 + 7612^2 .

It is a super-3 number, since 3×64455248³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64455241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 327086 + ... + 327282.

Almost surely, 2^64455248 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 64455248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74696391).

64455248 is an abundant number, since it is smaller than the sum of its proper divisors (84937534).

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

64455248 is a wasteful number, since it uses less digits than its factorization.

64455248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 223 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 64455248 is about 8028.4025808376. The cubic root of 64455248 is about 400.9461933638.

The spelling of 64455248 in words is "sixty-four million, four hundred fifty-five thousand, two hundred forty-eight".