648980670 has 32 divisors (see below), whose sum is σ = 1677366432. Its totient is φ = 159748992.

The previous prime is 648980669. The next prime is 648980687. The reversal of 648980670 is 76089846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831637 + ... + 832416.

It is an arithmetic number, because the mean of its divisors is an integer number (52417701).

Almost surely, 2^648980670 is an apocalyptic number.

648980670 is an abundant number, since it is smaller than the sum of its proper divisors (1028385762).

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

648980670 is a wasteful number, since it uses less digits than its factorization.

648980670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664076.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 648980670 is about 25475.0990184533. The cubic root of 648980670 is about 865.7860563795.

The spelling of 648980670 in words is "six hundred forty-eight million, nine hundred eighty thousand, six hundred seventy".