686666062 has 4 divisors (see below), whose sum is σ = 1029999096. Its totient is φ = 343333030.

The previous prime is 686666047. The next prime is 686666077. The reversal of 686666062 is 260666686.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (686666047) and next prime (686666077).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171666514 + ... + 171666517.

It is an arithmetic number, because the mean of its divisors is an integer number (257499774).

Almost surely, 2^686666062 is an apocalyptic number.

686666062 is a deficient number, since it is larger than the sum of its proper divisors (343333034).

686666062 is a wasteful number, since it uses less digits than its factorization.

686666062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343333033.

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 686666062 is about 26204.3138051734. The cubic root of 686666062 is about 882.2300798524.

The spelling of 686666062 in words is "six hundred eighty-six million, six hundred sixty-six thousand, sixty-two".