686772776650334 has 32 divisors (see below), whose sum is σ = 1131113867416416. Its totient is φ = 310141104174720.

The previous prime is 686772776650277. The next prime is 686772776650549. The reversal of 686772776650334 is 433056677277686.

It is a Smith number, since the sum of its digits (77) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13976252 + ... + 39609104.

It is an arithmetic number, because the mean of its divisors is an integer number (35347308356763).

Almost surely, 2^{686772776650334} is an apocalyptic number.

686772776650334 is a deficient number, since it is larger than the sum of its proper divisors (444341090766082).

686772776650334 is a wasteful number, since it uses less digits than its factorization.

686772776650334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25640780.

The product of its (nonzero) digits is 8961684480, while the sum is 77.

The spelling of 686772776650334 in words is "six hundred eighty-six trillion, seven hundred seventy-two billion, seven hundred seventy-six million, six hundred fifty thousand, three hundred thirty-four".