654136340 has 96 divisors (see below), whose sum is σ = 1620622080. Its totient is φ = 218649600.

The previous prime is 654136337. The next prime is 654136349. The reversal of 654136340 is 43631456.

654136340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 654136297 and 654136306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654136349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1255280 + ... + 1255800.

It is an arithmetic number, because the mean of its divisors is an integer number (16881480).

Almost surely, 2^654136340 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 654136340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810311040).

654136340 is an abundant number, since it is smaller than the sum of its proper divisors (966485740).

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

654136340 is a wasteful number, since it uses less digits than its factorization.

654136340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 654136340 is about 25576.0892241171. The cubic root of 654136340 is about 868.0726878187.

Adding to 654136340 its reverse (43631456), we get a palindrome (697767796).

The spelling of 654136340 in words is "six hundred fifty-four million, one hundred thirty-six thousand, three hundred forty".