648630 has 24 divisors (see below), whose sum is σ = 1686672. Its totient is φ = 172944.

The previous prime is 648629. The next prime is 648631. The reversal of 648630 is 36846.

648630 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (648629) and next prime (648631).

It is a junction number, because it is equal to n+sod(n) for n = 648594 and 648603.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648630.

It is not an unprimeable number, because it can be changed into a prime (648631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3514 + ... + 3693.

It is an arithmetic number, because the mean of its divisors is an integer number (70278).

2⁶⁴⁸⁶³⁰ is an apocalyptic number.

648630 is an abundant number, since it is smaller than the sum of its proper divisors (1038042).

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

648630 is a wasteful number, since it uses less digits than its factorization.

648630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220 (or 7217 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 648630 is about 805.3756887317. The cubic root of 648630 is about 86.5630088767.

The spelling of 648630 in words is "six hundred forty-eight thousand, six hundred thirty".