648889530 has 32 divisors (see below), whose sum is σ = 1568548800. Its totient is φ = 171791232.

The previous prime is 648889523. The next prime is 648889537. The reversal of 648889530 is 35988846.

648889530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648889523) and next prime (648889537).

It is not an unprimeable number, because it can be changed into a prime (648889537) 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, 73635 + ... + 81974.

It is an arithmetic number, because the mean of its divisors is an integer number (49017150).

Almost surely, 2^648889530 is an apocalyptic number.

648889530 is an abundant number, since it is smaller than the sum of its proper divisors (919659270).

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

648889530 is a wasteful number, since it uses less digits than its factorization.

648889530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155758.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 648889530 is about 25473.3101500374. The cubic root of 648889530 is about 865.7455254161.

The spelling of 648889530 in words is "six hundred forty-eight million, eight hundred eighty-nine thousand, five hundred thirty".