648264 has 16 divisors (see below), whose sum is σ = 1620720. Its totient is φ = 216080.

The previous prime is 648259. The next prime is 648269. The reversal of 648264 is 462846.

It is an interprime number because it is at equal distance from previous prime (648259) and next prime (648269).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (648269) by changing a digit.

648264 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13482 + ... + 13529.

It is an arithmetic number, because the mean of its divisors is an integer number (101295).

2⁶⁴⁸²⁶⁴ is an apocalyptic number.

It is an amenable number.

648264 is an abundant number, since it is smaller than the sum of its proper divisors (972456).

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

648264 is a wasteful number, since it uses less digits than its factorization.

648264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27020 (or 27016 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 648264 is about 805.1484335202. The cubic root of 648264 is about 86.5467242861.

The spelling of 648264 in words is "six hundred forty-eight thousand, two hundred sixty-four".