686370552863 has 2 divisors, whose sum is σ = 686370552864. Its totient is φ = 686370552862.

The previous prime is 686370552811. The next prime is 686370552911. The reversal of 686370552863 is 368255073686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686370552863 - 2¹² = 686370548767 is a prime.

It is a super-2 number, since 2×686370552863² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686370572863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343185276431 + 343185276432.

It is an arithmetic number, because the mean of its divisors is an integer number (343185276432).

Almost surely, 2^686370552863 is an apocalyptic number.

686370552863 is a deficient number, since it is larger than the sum of its proper divisors (1).

686370552863 is an equidigital number, since it uses as much as digits as its factorization.

686370552863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 686370552863 in words is "six hundred eighty-six billion, three hundred seventy million, five hundred fifty-two thousand, eight hundred sixty-three".