648761372 has 36 divisors (see below), whose sum is σ = 1330250040. Its totient is φ = 276028704.

The previous prime is 648761371. The next prime is 648761381. The reversal of 648761372 is 273167846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648761371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15338 + ... + 39150.

It is an arithmetic number, because the mean of its divisors is an integer number (36951390).

Almost surely, 2^648761372 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 648761372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665125020).

648761372 is an abundant number, since it is smaller than the sum of its proper divisors (681488668).

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

648761372 is a wasteful number, since it uses less digits than its factorization.

648761372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970 (or 23961 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 648761372 is about 25470.7944909459. The cubic root of 648761372 is about 865.6885257189.

The spelling of 648761372 in words is "six hundred forty-eight million, seven hundred sixty-one thousand, three hundred seventy-two".