648707 has 4 divisors (see below), whose sum is σ = 651840. Its totient is φ = 645576.

The previous prime is 648689. The next prime is 648709. The reversal of 648707 is 707846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 648707 - 2¹⁴ = 632323 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648707.

It is not an unprimeable number, because it can be changed into a prime (648709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1232 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (162960).

2⁶⁴⁸⁷⁰⁷ is an apocalyptic number.

648707 is a deficient number, since it is larger than the sum of its proper divisors (3133).

648707 is a wasteful number, since it uses less digits than its factorization.

648707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 648707 is about 805.4234910902. The cubic root of 648707 is about 86.5664340899.

The spelling of 648707 in words is "six hundred forty-eight thousand, seven hundred seven".