686650353 has 4 divisors (see below), whose sum is σ = 915533808. Its totient is φ = 457766900.

The previous prime is 686650339. The next prime is 686650357. The reversal of 686650353 is 353056686.

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.

It is a cyclic number.

It is not a de Polignac number, because 686650353 - 2⁹ = 686649841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686650357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114441723 + ... + 114441728.

It is an arithmetic number, because the mean of its divisors is an integer number (228883452).

Almost surely, 2^686650353 is an apocalyptic number.

It is an amenable number.

686650353 is a deficient number, since it is larger than the sum of its proper divisors (228883455).

686650353 is a wasteful number, since it uses less digits than its factorization.

686650353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228883454.

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 686650353 is about 26204.0140627347. The cubic root of 686650353 is about 882.2233521484.

The spelling of 686650353 in words is "six hundred eighty-six million, six hundred fifty thousand, three hundred fifty-three".