4660541621 has 4 divisors (see below), whose sum is σ = 4661011692. Its totient is φ = 4660071552.

The previous prime is 4660541617. The next prime is 4660541651. The reversal of 4660541621 is 1261450664.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2111402500 + 2549139121 = 45950^2 + 50489^2 .

It is a cyclic number.

It is not a de Polignac number, because 4660541621 - 2² = 4660541617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4660541651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219836 + ... + 240101.

It is an arithmetic number, because the mean of its divisors is an integer number (1165252923).

Almost surely, 2^4660541621 is an apocalyptic number.

It is an amenable number.

4660541621 is a deficient number, since it is larger than the sum of its proper divisors (470071).

4660541621 is a wasteful number, since it uses less digits than its factorization.

4660541621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470070.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 4660541621 is about 68268.1596426914. The cubic root of 4660541621 is about 1670.3678801580.

The spelling of 4660541621 in words is "four billion, six hundred sixty million, five hundred forty-one thousand, six hundred twenty-one".