648734416 has 80 divisors (see below), whose sum is σ = 1479601728. Its totient is φ = 272230400.

The previous prime is 648734381. The next prime is 648734483. The reversal of 648734416 is 614437846.

648734416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×648734416² = 841712685005722112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156531 + ... + 160621.

Almost surely, 2^648734416 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 648734416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739800864).

648734416 is an abundant number, since it is smaller than the sum of its proper divisors (830867312).

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

648734416 is a wasteful number, since it uses less digits than its factorization.

648734416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180 (or 4174 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 648734416 is about 25470.2653303808. The cubic root of 648734416 is about 865.6765357823.

The spelling of 648734416 in words is "six hundred forty-eight million, seven hundred thirty-four thousand, four hundred sixteen".