658409472 has 324 divisors, whose sum is σ = 2297037015. Its totient is φ = 188116992.

The previous prime is 658409467. The next prime is 658409491. The reversal of 658409472 is 274904856.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 329204736 + 329204736 = 18144^2 + 18144^2 .

It is a tau number, because it is divible by the number of its divisors (324).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18144.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 94058493 + ... + 94058499.

Almost surely, 2^658409472 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 658409472

658409472 is an abundant number, since it is smaller than the sum of its proper divisors (1638627543).

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

658409472 is an frugal number, since it uses more digits than its factorization.

658409472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 658409472 is about 25659.4908756974. The cubic root of 658409472 is about 869.9588089892.

The spelling of 658409472 in words is "six hundred fifty-eight million, four hundred nine thousand, four hundred seventy-two".