648004161 has 16 divisors (see below), whose sum is σ = 987836288. Its totient is φ = 370137600.

The previous prime is 648004141. The next prime is 648004163. The reversal of 648004161 is 161400846.

It is not a de Polignac number, because 648004161 - 2¹⁷ = 647873089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648004163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65991 + ... + 75171.

It is an arithmetic number, because the mean of its divisors is an integer number (61739768).

Almost surely, 2^648004161 is an apocalyptic number.

It is an amenable number.

648004161 is a deficient number, since it is larger than the sum of its proper divisors (339832127).

648004161 is a wasteful number, since it uses less digits than its factorization.

648004161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 648004161 is about 25455.9258523433. The cubic root of 648004161 is about 865.3515944028.

The spelling of 648004161 in words is "six hundred forty-eight million, four thousand, one hundred sixty-one".