648691082 has 16 divisors (see below), whose sum is σ = 1084020840. Its totient is φ = 289071552.

The previous prime is 648691081. The next prime is 648691091. The reversal of 648691082 is 280196846.

It is a happy number.

648691082 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 491464561 + 157226521 = 22169^2 + 12539^2 .

It is not an unprimeable number, because it can be changed into a prime (648691081) 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, 429413 + ... + 430920.

Almost surely, 2^648691082 is an apocalyptic number.

648691082 is a deficient number, since it is larger than the sum of its proper divisors (435329758).

648691082 is a wasteful number, since it uses less digits than its factorization.

648691082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860377.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 648691082 is about 25469.4146379535. The cubic root of 648691082 is about 865.6572602712.

The spelling of 648691082 in words is "six hundred forty-eight million, six hundred ninety-one thousand, eighty-two".