6663146517 has 24 divisors (see below), whose sum is σ = 10225533240. Its totient is φ = 4172999040.

The previous prime is 6663146513. The next prime is 6663146519. The reversal of 6663146517 is 7156413666.

It can be written as a sum of positive squares in 4 ways, for example, as 975875121 + 5687271396 = 31239^2 + 75414^2 .

It is not a de Polignac number, because 6663146517 - 2² = 6663146513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663146513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335334 + ... + 354647.

It is an arithmetic number, because the mean of its divisors is an integer number (426063885).

Almost surely, 2^6663146517 is an apocalyptic number.

It is an amenable number.

6663146517 is a deficient number, since it is larger than the sum of its proper divisors (3562386723).

6663146517 is a wasteful number, since it uses less digits than its factorization.

6663146517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690053 (or 690050 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 6663146517 is about 81628.0988201979. The cubic root of 6663146517 is about 1881.7407406746.

The spelling of 6663146517 in words is "six billion, six hundred sixty-three million, one hundred forty-six thousand, five hundred seventeen".