6615696947 has 2 divisors, whose sum is σ = 6615696948. Its totient is φ = 6615696946.

The previous prime is 6615696911. The next prime is 6615696959. The reversal of 6615696947 is 7496965166.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6615696947 - 2⁸ = 6615696691 is a prime.

It is not a weakly prime, because it can be changed into another prime (6615696907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307848473 + 3307848474.

It is an arithmetic number, because the mean of its divisors is an integer number (3307848474).

Almost surely, 2^6615696947 is an apocalyptic number.

6615696947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6615696947 is an equidigital number, since it uses as much as digits as its factorization.

6615696947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 59.

The square root of 6615696947 is about 81336.9347037371. The cubic root of 6615696947 is about 1877.2633476720.

The spelling of 6615696947 in words is "six billion, six hundred fifteen million, six hundred ninety-six thousand, nine hundred forty-seven".