654307680 has 384 divisors, whose sum is σ = 2389782528. Its totient is φ = 149225472.

The previous prime is 654307673. The next prime is 654307681. The reversal of 654307680 is 86703456.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654307681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6745392 + ... + 6745488.

It is an arithmetic number, because the mean of its divisors is an integer number (6223392).

Almost surely, 2^654307680 is an apocalyptic number.

654307680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654307680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194891264).

654307680 is an abundant number, since it is smaller than the sum of its proper divisors (1735474848).

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

654307680 is a wasteful number, since it uses less digits than its factorization.

654307680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 654307680 is about 25579.4386177649. The cubic root of 654307680 is about 868.1484735435.

The spelling of 654307680 in words is "six hundred fifty-four million, three hundred seven thousand, six hundred eighty".