648768177 has 16 divisors (see below), whose sum is σ = 979274880. Its totient is φ = 424350576.

The previous prime is 648768173. The next prime is 648768179. The reversal of 648768177 is 771867846.

It is not a de Polignac number, because 648768177 - 2² = 648768173 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648768173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225253 + ... + 228114.

It is an arithmetic number, because the mean of its divisors is an integer number (61204680).

Almost surely, 2^648768177 is an apocalyptic number.

It is an amenable number.

648768177 is a deficient number, since it is larger than the sum of its proper divisors (330506703).

648768177 is a wasteful number, since it uses less digits than its factorization.

648768177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453429 (or 453423 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 648768177 is about 25470.9280749642. The cubic root of 648768177 is about 865.6915525071.

The spelling of 648768177 in words is "six hundred forty-eight million, seven hundred sixty-eight thousand, one hundred seventy-seven".