648783480 has 32 divisors (see below), whose sum is σ = 1946350800. Its totient is φ = 173008896.

The previous prime is 648783451. The next prime is 648783491. The reversal of 648783480 is 84387846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2703145 + ... + 2703384.

Almost surely, 2^648783480 is an apocalyptic number.

648783480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648783480 is an abundant number, since it is smaller than the sum of its proper divisors (1297567320).

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

648783480 is a wasteful number, since it uses less digits than its factorization.

648783480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5406543 (or 5406539 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 648783480 is about 25471.2284744965. The cubic root of 648783480 is about 865.6983590337.

The spelling of 648783480 in words is "six hundred forty-eight million, seven hundred eighty-three thousand, four hundred eighty".