648306768 has 20 divisors (see below), whose sum is σ = 1674792608. Its totient is φ = 216102240.

The previous prime is 648306761. The next prime is 648306787. The reversal of 648306768 is 867603846.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 13506391 = 648306768 / (6 + 4 + 8 + 3 + 0 + 6 + 7 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648306761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6753148 + ... + 6753243.

Almost surely, 2^648306768 is an apocalyptic number.

It is an amenable number.

648306768 is an abundant number, since it is smaller than the sum of its proper divisors (1026485840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648306768 is a wasteful number, since it uses less digits than its factorization.

648306768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13506402 (or 13506396 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 648306768 is about 25461.8689023410. The cubic root of 648306768 is about 865.4862749675.

The spelling of 648306768 in words is "six hundred forty-eight million, three hundred six thousand, seven hundred sixty-eight".