648115 has 16 divisors (see below), whose sum is σ = 856800. Its totient is φ = 470496.

The previous prime is 648107. The next prime is 648119. The reversal of 648115 is 511846.

It is not a de Polignac number, because 648115 - 2³ = 648107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648115.

It is not an unprimeable number, because it can be changed into a prime (648119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10956 + ... + 11014.

It is an arithmetic number, because the mean of its divisors is an integer number (53550).

2⁶⁴⁸¹¹⁵ is an apocalyptic number.

648115 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

648115 is a deficient number, since it is larger than the sum of its proper divisors (208685).

648115 is an equidigital number, since it uses as much as digits as its factorization.

648115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 77 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 648115 is about 805.0558986803. The cubic root of 648115 is about 86.5400930113.

The spelling of 648115 in words is "six hundred forty-eight thousand, one hundred fifteen".