654499456 has 96 divisors (see below), whose sum is σ = 1492738380. Its totient is φ = 284098560.

The previous prime is 654499451. The next prime is 654499471. The reversal of 654499456 is 654994456.

It can be written as a sum of positive squares in 6 ways, for example, as 275029056 + 379470400 = 16584^2 + 19480^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654499451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480216 + ... + 481576.

Almost surely, 2^654499456 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 654499456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746369190).

654499456 is an abundant number, since it is smaller than the sum of its proper divisors (838238924).

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

654499456 is a wasteful number, since it uses less digits than its factorization.

654499456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1393 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The square root of 654499456 is about 25583.1869789516. The cubic root of 654499456 is about 868.2332826649.

The spelling of 654499456 in words is "six hundred fifty-four million, four hundred ninety-nine thousand, four hundred fifty-six".