64648115 has 16 divisors (see below), whose sum is σ = 88810752. Its totient is φ = 44254944.

The previous prime is 64648109. The next prime is 64648117. The reversal of 64648115 is 51184646.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64648115 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64648117) 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 15 ways as a sum of consecutive naturals, for example, 26372 + ... + 28718.

It is an arithmetic number, because the mean of its divisors is an integer number (5550672).

Almost surely, 2^64648115 is an apocalyptic number.

64648115 is a deficient number, since it is larger than the sum of its proper divisors (24162637).

64648115 is a wasteful number, since it uses less digits than its factorization.

64648115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146.

The product of its digits is 23040, while the sum is 35.

The square root of 64648115 is about 8040.4051514834. The cubic root of 64648115 is about 401.3457071867.

The spelling of 64648115 in words is "sixty-four million, six hundred forty-eight thousand, one hundred fifteen".