6690276947 has 2 divisors, whose sum is σ = 6690276948. Its totient is φ = 6690276946.

The previous prime is 6690276851. The next prime is 6690277021. The reversal of 6690276947 is 7496720966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6690276947 - 2¹⁸ = 6690014803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6690276892 and 6690276901.

It is not a weakly prime, because it can be changed into another prime (6690276247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345138473 + 3345138474.

It is an arithmetic number, because the mean of its divisors is an integer number (3345138474).

Almost surely, 2^6690276947 is an apocalyptic number.

6690276947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690276947 is an equidigital number, since it uses as much as digits as its factorization.

6690276947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The square root of 6690276947 is about 81794.1131561435. The cubic root of 6690276947 is about 1884.2912524743.

The spelling of 6690276947 in words is "six billion, six hundred ninety million, two hundred seventy-six thousand, nine hundred forty-seven".