648461 has 8 divisors (see below), whose sum is σ = 713664. Its totient is φ = 584320.

The previous prime is 648449. The next prime is 648481. The reversal of 648461 is 164846.

648461 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 a de Polignac number, because none of the positive numbers 2^k-648461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648481) 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, 1661 + ... + 2013.

It is an arithmetic number, because the mean of its divisors is an integer number (89208).

2⁶⁴⁸⁴⁶¹ is an apocalyptic number.

It is an amenable number.

648461 is a deficient number, since it is larger than the sum of its proper divisors (65203).

648461 is a wasteful number, since it uses less digits than its factorization.

648461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 4608, while the sum is 29.

The square root of 648461 is about 805.2707619180. The cubic root of 648461 is about 86.5554902507. Note that the first 3 decimals are identical.

The spelling of 648461 in words is "six hundred forty-eight thousand, four hundred sixty-one".