689396693986 has 32 divisors (see below), whose sum is σ = 1388435303808. Its totient is φ = 247934874240.

The previous prime is 689396693983. The next prime is 689396694047.

689396693986 is nontrivially palindromic in base 10.

689396693986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (689396693983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172174995 + ... + 172178998.

It is an arithmetic number, because the mean of its divisors is an integer number (43388603244).

Almost surely, 2^689396693986 is an apocalyptic number.

689396693986 is an abundant number, since it is smaller than the sum of its proper divisors (699038609822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689396693986 is a wasteful number, since it uses less digits than its factorization.

689396693986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344354026.

The product of its digits is 4897760256, while the sum is 82.

The spelling of 689396693986 in words is "six hundred eighty-nine billion, three hundred ninety-six million, six hundred ninety-three thousand, nine hundred eighty-six".