648643179 has 12 divisors (see below), whose sum is σ = 877214648. Its totient is φ = 426257280.

The previous prime is 648643159. The next prime is 648643183. The reversal of 648643179 is 971346846.

It is not a de Polignac number, because 648643179 - 2⁸ = 648642923 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 (648643129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376039 + ... + 377759.

Almost surely, 2^648643179 is an apocalyptic number.

648643179 is a deficient number, since it is larger than the sum of its proper divisors (228571469).

648643179 is an frugal number, since it uses more digits than its factorization.

648643179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518 (or 1797 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 648643179 is about 25468.4742181388. The cubic root of 648643179 is about 865.6359514121.

The spelling of 648643179 in words is "six hundred forty-eight million, six hundred forty-three thousand, one hundred seventy-nine".