648970 has 32 divisors (see below), whose sum is σ = 1363968. Its totient is φ = 217728.

The previous prime is 648961. The next prime is 648971. The reversal of 648970 is 79846.

648970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5047 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (42624).

2⁶⁴⁸⁹⁷⁰ is an apocalyptic number.

648970 is an abundant number, since it is smaller than the sum of its proper divisors (714998).

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

648970 is a wasteful number, since it uses less digits than its factorization.

648970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 648970 is about 805.5867426913. The cubic root of 648970 is about 86.5781311509.

The spelling of 648970 in words is "six hundred forty-eight thousand, nine hundred seventy".