654521010 has 128 divisors (see below), whose sum is σ = 1909474560. Its totient is φ = 141388800.

The previous prime is 654521003. The next prime is 654521059. The reversal of 654521010 is 10125456.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 121780 + ... + 127040.

It is an arithmetic number, because the mean of its divisors is an integer number (14917770).

Almost surely, 2^654521010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654521010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954737280).

654521010 is an abundant number, since it is smaller than the sum of its proper divisors (1254953550).

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

654521010 is a wasteful number, since it uses less digits than its factorization.

654521010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 654521010 is about 25583.6082287077. The cubic root of 654521010 is about 868.2428134570.

Adding to 654521010 its reverse (10125456), we get a palindrome (664646466).

The spelling of 654521010 in words is "six hundred fifty-four million, five hundred twenty-one thousand, ten".