64915248 has 160 divisors (see below), whose sum is σ = 192844800. Its totient is φ = 18690048.

The previous prime is 64915247. The next prime is 64915273. The reversal of 64915248 is 84251946.

It is a Cunningham number, because it is equal to 8057²-1.

It is not an unprimeable number, because it can be changed into a prime (64915241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 821673 + ... + 821751.

It is an arithmetic number, because the mean of its divisors is an integer number (1205280).

Almost surely, 2^64915248 is an apocalyptic number.

64915248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64915248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96422400).

64915248 is an abundant number, since it is smaller than the sum of its proper divisors (127929552).

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

64915248 is a wasteful number, since it uses less digits than its factorization.

64915248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 173 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 64915248 is about 8056.9999379422. Note that the first 4 decimals coincide. The cubic root of 64915248 is about 401.8977488015.

The spelling of 64915248 in words is "sixty-four million, nine hundred fifteen thousand, two hundred forty-eight".