648927216 has 240 divisors, whose sum is σ = 2257315840. Its totient is φ = 169827840.

The previous prime is 648927161. The next prime is 648927269. The reversal of 648927216 is 612729846.

It is a happy number.

It is a super-2 number, since 2×648927216² = 842213063331021312, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 593166 + ... + 594258.

Almost surely, 2^648927216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648927216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128657920).

648927216 is an abundant number, since it is smaller than the sum of its proper divisors (1608388624).

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

648927216 is a wasteful number, since it uses less digits than its factorization.

648927216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164 (or 1155 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 648927216 is about 25474.0498547051. The cubic root of 648927216 is about 865.7622852562.

The spelling of 648927216 in words is "six hundred forty-eight million, nine hundred twenty-seven thousand, two hundred sixteen".