686545062077448 has 192 divisors, whose sum is σ = 2139141340627200. Its totient is φ = 194852321625600.

The previous prime is 686545062077401. The next prime is 686545062077467. The reversal of 686545062077448 is 844770260545686.

686545062077448 is a `hidden beast` number, since 6 + 8 + 6 + 5 + 4 + 50 + 62 + 0 + 77 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5063359638 + ... + 5063495226.

It is an arithmetic number, because the mean of its divisors is an integer number (11141361149100).

Almost surely, 2^{686545062077448} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686545062077448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069570670313600).

686545062077448 is an abundant number, since it is smaller than the sum of its proper divisors (1452596278549752).

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

686545062077448 is a wasteful number, since it uses less digits than its factorization.

686545062077448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202292 (or 202285 counting only the distinct ones).

The product of its (nonzero) digits is 2167603200, while the sum is 72.

The spelling of 686545062077448 in words is "six hundred eighty-six trillion, five hundred forty-five billion, sixty-two million, seventy-seven thousand, four hundred forty-eight".