648769706 has 48 divisors (see below), whose sum is σ = 1115339400. Its totient is φ = 282979008.

The previous prime is 648769699. The next prime is 648769727. The reversal of 648769706 is 607967846.

It is a happy number.

648769706 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 119355625 + 529414081 = 10925^2 + 23009^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1586030 + ... + 1586438.

Almost surely, 2^648769706 is an apocalyptic number.

648769706 is a deficient number, since it is larger than the sum of its proper divisors (466569694).

648769706 is a wasteful number, since it uses less digits than its factorization.

648769706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 53.

The square root of 648769706 is about 25470.9580895576. The cubic root of 648769706 is about 865.6922325863.

The spelling of 648769706 in words is "six hundred forty-eight million, seven hundred sixty-nine thousand, seven hundred six".