6691649486 has 16 divisors (see below), whose sum is σ = 10835056800. Its totient is φ = 3089996448.

The previous prime is 6691649477. The next prime is 6691649507. The reversal of 6691649486 is 6849461966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2506781 + ... + 2509448.

It is an arithmetic number, because the mean of its divisors is an integer number (677191050).

Almost surely, 2^6691649486 is an apocalyptic number.

6691649486 is a deficient number, since it is larger than the sum of its proper divisors (4143407314).

6691649486 is a wasteful number, since it uses less digits than its factorization.

6691649486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016283.

The product of its digits is 13436928, while the sum is 59.

The square root of 6691649486 is about 81802.5029323675. The cubic root of 6691649486 is about 1884.4201004732.

The spelling of 6691649486 in words is "six billion, six hundred ninety-one million, six hundred forty-nine thousand, four hundred eighty-six".