6452657621 has 16 divisors (see below), whose sum is σ = 6937790400. Its totient is φ = 5982657408.

The previous prime is 6452657611. The next prime is 6452657671. The reversal of 6452657621 is 1267562546.

It is a cyclic number.

It is not a de Polignac number, because 6452657621 - 2¹⁰ = 6452656597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6452657611) 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, 404030 + ... + 419696.

It is an arithmetic number, because the mean of its divisors is an integer number (433611900).

Almost surely, 2^6452657621 is an apocalyptic number.

It is an amenable number.

6452657621 is a deficient number, since it is larger than the sum of its proper divisors (485132779).

6452657621 is a wasteful number, since it uses less digits than its factorization.

6452657621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16148.

The product of its digits is 604800, while the sum is 44.

The square root of 6452657621 is about 80328.4359426972. The cubic root of 6452657621 is about 1861.7136114481.

The spelling of 6452657621 in words is "six billion, four hundred fifty-two million, six hundred fifty-seven thousand, six hundred twenty-one".