686963933 has 4 divisors (see below), whose sum is σ = 687218208. Its totient is φ = 686709660.

The previous prime is 686963929. The next prime is 686963947. The reversal of 686963933 is 339369686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 339369686 = 2 ⋅169684843.

It is a cyclic number.

It is not a de Polignac number, because 686963933 - 2² = 686963929 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686963033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123041 + ... + 128502.

It is an arithmetic number, because the mean of its divisors is an integer number (171804552).

Almost surely, 2^686963933 is an apocalyptic number.

It is an amenable number.

686963933 is a deficient number, since it is larger than the sum of its proper divisors (254275).

686963933 is a wasteful number, since it uses less digits than its factorization.

686963933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254274.

The product of its digits is 3779136, while the sum is 53.

The square root of 686963933 is about 26209.9968141929. The cubic root of 686963933 is about 882.3576298513.

The spelling of 686963933 in words is "six hundred eighty-six million, nine hundred sixty-three thousand, nine hundred thirty-three".