689942615548 has 6 divisors (see below), whose sum is σ = 1207399577216. Its totient is φ = 344971307772.

The previous prime is 689942615533. The next prime is 689942615587. The reversal of 689942615548 is 845516249986.

689942615548 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86242826940 + ... + 86242826947.

Almost surely, 2^689942615548 is an apocalyptic number.

It is an amenable number.

689942615548 is a deficient number, since it is larger than the sum of its proper divisors (517456961668).

689942615548 is a wasteful number, since it uses less digits than its factorization.

689942615548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172485653891 (or 172485653889 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 67.

The spelling of 689942615548 in words is "six hundred eighty-nine billion, nine hundred forty-two million, six hundred fifteen thousand, five hundred forty-eight".