686280305445 has 64 divisors (see below), whose sum is σ = 1287920922624. Its totient is φ = 305582538240.

The previous prime is 686280305443. The next prime is 686280305467. The reversal of 686280305445 is 544503082686.

It is not a de Polignac number, because 686280305445 - 2¹ = 686280305443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686280305443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64209 + ... + 1173321.

It is an arithmetic number, because the mean of its divisors is an integer number (20123764416).

Almost surely, 2^686280305445 is an apocalyptic number.

It is an amenable number.

686280305445 is a deficient number, since it is larger than the sum of its proper divisors (601640617179).

686280305445 is a wasteful number, since it uses less digits than its factorization.

686280305445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109282.

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 686280305445 in words is "six hundred eighty-six billion, two hundred eighty million, three hundred five thousand, four hundred forty-five".