648554382 has 48 divisors (see below), whose sum is σ = 1612420992. Its totient is φ = 184554000.

The previous prime is 648554381. The next prime is 648554383. The reversal of 648554382 is 283455846.

648554382 is a `hidden beast` number, since 64 + 8 + 554 + 38 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (648554381) and next prime (648554383).

It is a super-2 number, since 2×648554382² = 841245572822803848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648554381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21373 + ... + 41879.

It is an arithmetic number, because the mean of its divisors is an integer number (33592104).

Almost surely, 2^648554382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648554382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806210496).

648554382 is an abundant number, since it is smaller than the sum of its proper divisors (963866610).

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

648554382 is a wasteful number, since it uses less digits than its factorization.

648554382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20773 (or 20770 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 648554382 is about 25466.7308856084. The cubic root of 648554382 is about 865.5964487570.

The spelling of 648554382 in words is "six hundred forty-eight million, five hundred fifty-four thousand, three hundred eighty-two".