654880641 has 8 divisors (see below), whose sum is σ = 885472704. Its totient is φ = 430437840.

The previous prime is 654880637. The next prime is 654880651. The reversal of 654880641 is 146088456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 654880641 - 2² = 654880637 is a prime.

It is a super-3 number, since 3×654880641³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 654880593 and 654880602.

It is not an unprimeable number, because it can be changed into a prime (654880651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1537066 + ... + 1537491.

It is an arithmetic number, because the mean of its divisors is an integer number (110684088).

Almost surely, 2^654880641 is an apocalyptic number.

It is an amenable number.

654880641 is a deficient number, since it is larger than the sum of its proper divisors (230592063).

654880641 is a wasteful number, since it uses less digits than its factorization.

654880641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074631.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 654880641 is about 25590.6358068728. The cubic root of 654880641 is about 868.4018049715.

The spelling of 654880641 in words is "six hundred fifty-four million, eight hundred eighty thousand, six hundred forty-one".