686064611 has 2 divisors, whose sum is σ = 686064612. Its totient is φ = 686064610.

The previous prime is 686064569. The next prime is 686064641. The reversal of 686064611 is 116460686.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 686064611 - 2¹⁴ = 686048227 is a prime.

It is not a weakly prime, because it can be changed into another prime (686064641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343032305 + 343032306.

It is an arithmetic number, because the mean of its divisors is an integer number (343032306).

Almost surely, 2^686064611 is an apocalyptic number.

686064611 is a deficient number, since it is larger than the sum of its proper divisors (1).

686064611 is an equidigital number, since it uses as much as digits as its factorization.

686064611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 686064611 is about 26192.8351080978. The cubic root of 686064611 is about 881.9724227507.

The spelling of 686064611 in words is "six hundred eighty-six million, sixty-four thousand, six hundred eleven".