6649672963 has 2 divisors, whose sum is σ = 6649672964. Its totient is φ = 6649672962.

The previous prime is 6649672957. The next prime is 6649672973. The reversal of 6649672963 is 3692769466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6649672963 - 2¹³ = 6649664771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6649672898 and 6649672907.

It is not a weakly prime, because it can be changed into another prime (6649672973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3324836481 + 3324836482.

It is an arithmetic number, because the mean of its divisors is an integer number (3324836482).

Almost surely, 2^6649672963 is an apocalyptic number.

6649672963 is a deficient number, since it is larger than the sum of its proper divisors (1).

6649672963 is an equidigital number, since it uses as much as digits as its factorization.

6649672963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 58.

The square root of 6649672963 is about 81545.5269343451. The cubic root of 6649672963 is about 1880.4715283031.

The spelling of 6649672963 in words is "six billion, six hundred forty-nine million, six hundred seventy-two thousand, nine hundred sixty-three".