654971328 has 168 divisors, whose sum is σ = 2063617920. Its totient is φ = 196968960.

The previous prime is 654971323. The next prime is 654971329. The reversal of 654971328 is 823179456.

654971328 is a `hidden beast` number, since 6 + 549 + 71 + 32 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654971323) 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, 1057803 + ... + 1058421.

It is an arithmetic number, because the mean of its divisors is an integer number (12283440).

Almost surely, 2^654971328 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 654971328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031808960).

654971328 is an abundant number, since it is smaller than the sum of its proper divisors (1408646592).

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

654971328 is a wasteful number, since it uses less digits than its factorization.

654971328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 802 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 654971328 is about 25592.4076241373. The cubic root of 654971328 is about 868.4418881636.

It can be divided in two parts, 6549 and 71328, that added together give a palindrome (77877).

The spelling of 654971328 in words is "six hundred fifty-four million, nine hundred seventy-one thousand, three hundred twenty-eight".