5604121681 has 8 divisors (see below), whose sum is σ = 5621165600. Its totient is φ = 5587094880.

The previous prime is 5604121609. The next prime is 5604121693. The reversal of 5604121681 is 1861214065.

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

It is a cyclic number.

It is not a de Polignac number, because 5604121681 - 2⁹ = 5604121169 is a prime.

It is a super-2 number, since 2×5604121681² = 62812359630908531522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5604121381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966850 + ... + 972628.

It is an arithmetic number, because the mean of its divisors is an integer number (702645700).

Almost surely, 2^5604121681 is an apocalyptic number.

It is an amenable number.

5604121681 is a deficient number, since it is larger than the sum of its proper divisors (17043919).

5604121681 is a wasteful number, since it uses less digits than its factorization.

5604121681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8559.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 5604121681 is about 74860.6818096122. The cubic root of 5604121681 is about 1776.2435701003.

The spelling of 5604121681 in words is "five billion, six hundred four million, one hundred twenty-one thousand, six hundred eighty-one".