648769047 has 8 divisors (see below), whose sum is σ = 872680944. Its totient is φ = 428684928.

The previous prime is 648769039. The next prime is 648769049. The reversal of 648769047 is 740967846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648769047 - 2³ = 648769039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648769049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 956548 + ... + 957225.

It is an arithmetic number, because the mean of its divisors is an integer number (109085118).

Almost surely, 2^648769047 is an apocalyptic number.

648769047 is a deficient number, since it is larger than the sum of its proper divisors (223911897).

648769047 is a wasteful number, since it uses less digits than its factorization.

648769047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913889.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 648769047 is about 25470.9451532526. The cubic root of 648769047 is about 865.6919394719.

The spelling of 648769047 in words is "six hundred forty-eight million, seven hundred sixty-nine thousand, forty-seven".