648715 has 8 divisors (see below), whose sum is σ = 812448. Its totient is φ = 496320.

The previous prime is 648709. The next prime is 648719. The reversal of 648715 is 517846.

648715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648715 - 2¹⁹ = 124427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2706 + ... + 2935.

It is an arithmetic number, because the mean of its divisors is an integer number (101556).

2⁶⁴⁸⁷¹⁵ is an apocalyptic number.

648715 is a deficient number, since it is larger than the sum of its proper divisors (163733).

648715 is a wasteful number, since it uses less digits than its factorization.

648715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669.

The product of its digits is 6720, while the sum is 31.

The square root of 648715 is about 805.4284574064. The cubic root of 648715 is about 86.5667899406.

The spelling of 648715 in words is "six hundred forty-eight thousand, seven hundred fifteen".