654404740 has 72 divisors (see below), whose sum is σ = 1567476288. Its totient is φ = 227578560.

The previous prime is 654404689. The next prime is 654404741. The reversal of 654404740 is 47404456.

It is a junction number, because it is equal to n+sod(n) for n = 654404696 and 654404705.

It is not an unprimeable number, because it can be changed into a prime (654404741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113569 + ... + 119191.

It is an arithmetic number, because the mean of its divisors is an integer number (21770504).

Almost surely, 2^654404740 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 654404740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783738144).

654404740 is an abundant number, since it is smaller than the sum of its proper divisors (913071548).

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

654404740 is a wasteful number, since it uses less digits than its factorization.

654404740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689 (or 5664 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 654404740 is about 25581.3357743492. The cubic root of 654404740 is about 868.1913984687.

The spelling of 654404740 in words is "six hundred fifty-four million, four hundred four thousand, seven hundred forty".