648893775 has 12 divisors (see below), whose sum is σ = 1072837832. Its totient is φ = 346076640.

The previous prime is 648893771. The next prime is 648893809. The reversal of 648893775 is 577398846.

It is not a de Polignac number, because 648893775 - 2² = 648893771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648893771) 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 11 ways as a sum of consecutive naturals, for example, 4325884 + ... + 4326033.

Almost surely, 2^648893775 is an apocalyptic number.

648893775 is a deficient number, since it is larger than the sum of its proper divisors (423944057).

648893775 is a wasteful number, since it uses less digits than its factorization.

648893775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8651930 (or 8651925 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The square root of 648893775 is about 25473.3934724057. The cubic root of 648893775 is about 865.7474132987.

The spelling of 648893775 in words is "six hundred forty-eight million, eight hundred ninety-three thousand, seven hundred seventy-five".