648507 has 8 divisors (see below), whose sum is σ = 872784. Its totient is φ = 428288.

The previous prime is 648481. The next prime is 648509. The reversal of 648507 is 705846.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 648507 - 2⁷ = 648379 is a prime.

It is a super-2 number, since 2×648507² = 841122658098, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648507.

It is not an unprimeable number, because it can be changed into a prime (648509) 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, 618 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (109098).

2⁶⁴⁸⁵⁰⁷ is an apocalyptic number.

648507 is a deficient number, since it is larger than the sum of its proper divisors (224277).

648507 is a wasteful number, since it uses less digits than its factorization.

648507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 648507 is about 805.2993232333. The cubic root of 648507 is about 86.5575368700.

The spelling of 648507 in words is "six hundred forty-eight thousand, five hundred seven".