648426977 has 8 divisors (see below), whose sum is σ = 709306752. Its totient is φ = 587869200.

The previous prime is 648426943. The next prime is 648426983. The reversal of 648426977 is 779624846.

648426977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 648426977 - 2⁶ = 648426913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648426997) 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, 76274 + ... + 84347.

It is an arithmetic number, because the mean of its divisors is an integer number (88663344).

Almost surely, 2^648426977 is an apocalyptic number.

It is an amenable number.

648426977 is a deficient number, since it is larger than the sum of its proper divisors (60879775).

648426977 is a wasteful number, since it uses less digits than its factorization.

648426977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160999.

The product of its digits is 4064256, while the sum is 53.

The square root of 648426977 is about 25464.2293619893. The cubic root of 648426977 is about 865.5397644651.

The spelling of 648426977 in words is "six hundred forty-eight million, four hundred twenty-six thousand, nine hundred seventy-seven".