648534 has 8 divisors (see below), whose sum is σ = 1297080. Its totient is φ = 216176.

The previous prime is 648509. The next prime is 648563. The reversal of 648534 is 435846.

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

648534 is an admirable number.

It is a congruent number.

It is an unprimeable number.

648534 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54039 + ... + 54050.

It is an arithmetic number, because the mean of its divisors is an integer number (162135).

2⁶⁴⁸⁵³⁴ is an apocalyptic number.

648534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648534 is a wasteful number, since it uses less digits than its factorization.

648534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108094.

The product of its digits is 11520, while the sum is 30.

The square root of 648534 is about 805.3160870118. The cubic root of 648534 is about 86.5587381015.

The spelling of 648534 in words is "six hundred forty-eight thousand, five hundred thirty-four".