686923093 has 16 divisors (see below), whose sum is σ = 751032000. Its totient is φ = 626009472.

The previous prime is 686923067. The next prime is 686923109. The reversal of 686923093 is 390329686.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 686923093 - 2⁹ = 686922581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686927093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57078 + ... + 68056.

It is an arithmetic number, because the mean of its divisors is an integer number (46939500).

Almost surely, 2^686923093 is an apocalyptic number.

It is an amenable number.

686923093 is a deficient number, since it is larger than the sum of its proper divisors (64108907).

686923093 is a wasteful number, since it uses less digits than its factorization.

686923093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11124.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 686923093 is about 26209.2177105689. The cubic root of 686923093 is about 882.3401441202.

The spelling of 686923093 in words is "six hundred eighty-six million, nine hundred twenty-three thousand, ninety-three".