686467838701 has 2 divisors, whose sum is σ = 686467838702. Its totient is φ = 686467838700.

The previous prime is 686467838647. The next prime is 686467838737. The reversal of 686467838701 is 107838764686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387007165801 + 299460672900 = 622099^2 + 547230^2 .

It is a cyclic number.

It is not a de Polignac number, because 686467838701 - 2¹³ = 686467830509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686447838701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343233919350 + 343233919351.

It is an arithmetic number, because the mean of its divisors is an integer number (343233919351).

Almost surely, 2^686467838701 is an apocalyptic number.

It is an amenable number.

686467838701 is a deficient number, since it is larger than the sum of its proper divisors (1).

686467838701 is an equidigital number, since it uses as much as digits as its factorization.

686467838701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 686467838701 in words is "six hundred eighty-six billion, four hundred sixty-seven million, eight hundred thirty-eight thousand, seven hundred one".