6480077621 has 16 divisors (see below), whose sum is σ = 6749456640. Its totient is φ = 6215901120.

The previous prime is 6480077603. The next prime is 6480077633. The reversal of 6480077621 is 1267700846.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6480077621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6480076621) 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, 2766911 + ... + 2769251.

It is an arithmetic number, because the mean of its divisors is an integer number (421841040).

Almost surely, 2^6480077621 is an apocalyptic number.

It is an amenable number.

6480077621 is a deficient number, since it is larger than the sum of its proper divisors (269379019).

6480077621 is a wasteful number, since it uses less digits than its factorization.

6480077621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 6480077621 is about 80498.9293158611. The cubic root of 6480077621 is about 1864.3469475702.

The spelling of 6480077621 in words is "six billion, four hundred eighty million, seventy-seven thousand, six hundred twenty-one".