689546645986 has 16 divisors (see below), whose sum is σ = 1128891346848. Its totient is φ = 313279657600.

The previous prime is 689546645981. The next prime is 689546646001.

689546645986 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (689546645981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7484980 + ... + 7576543.

It is an arithmetic number, because the mean of its divisors is an integer number (70555709178).

Almost surely, 2^689546645986 is an apocalyptic number.

689546645986 is a deficient number, since it is larger than the sum of its proper divisors (439344700862).

689546645986 is a wasteful number, since it uses less digits than its factorization.

689546645986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15063617.

The product of its digits is 2687385600, while the sum is 76.

The spelling of 689546645986 in words is "six hundred eighty-nine billion, five hundred forty-six million, six hundred forty-five thousand, nine hundred eighty-six".