686370552810 has 16 divisors (see below), whose sum is σ = 1647289326816. Its totient is φ = 183032147408.

The previous prime is 686370552677. The next prime is 686370552811. The reversal of 686370552810 is 18255073686.

It is a happy number.

It is a super-2 number, since 2×686370552810² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686370552811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11439509184 + ... + 11439509243.

It is an arithmetic number, because the mean of its divisors is an integer number (102955582926).

Almost surely, 2^686370552810 is an apocalyptic number.

686370552810 is an abundant number, since it is smaller than the sum of its proper divisors (960918774006).

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

686370552810 is a wasteful number, since it uses less digits than its factorization.

686370552810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22879018437.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 686370552810 in words is "six hundred eighty-six billion, three hundred seventy million, five hundred fifty-two thousand, eight hundred ten".