648515 has 12 divisors (see below), whose sum is σ = 905616. Its totient is φ = 444528.

The previous prime is 648509. The next prime is 648563. The reversal of 648515 is 515846.

It is a happy number.

648515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 648515 - 2⁸ = 648259 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648515.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079 + ... + 1568.

It is an arithmetic number, because the mean of its divisors is an integer number (75468).

2⁶⁴⁸⁵¹⁵ is an apocalyptic number.

648515 is a deficient number, since it is larger than the sum of its proper divisors (257101).

648515 is a wasteful number, since it uses less digits than its factorization.

648515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 2659 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 648515 is about 805.3042903152. The cubic root of 648515 is about 86.5578927939.

The spelling of 648515 in words is "six hundred forty-eight thousand, five hundred fifteen".