688736201 has 8 divisors (see below), whose sum is σ = 697458600. Its totient is φ = 680035840.

The previous prime is 688736197. The next prime is 688736233. The reversal of 688736201 is 102637886.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10394176 + 678342025 = 3224^2 + 26045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688736201 - 2² = 688736197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688736101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62645 + ... + 72813.

It is an arithmetic number, because the mean of its divisors is an integer number (87182325).

Almost surely, 2^688736201 is an apocalyptic number.

It is an amenable number.

688736201 is a deficient number, since it is larger than the sum of its proper divisors (8722399).

688736201 is a wasteful number, since it uses less digits than its factorization.

688736201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 688736201 is about 26243.7840449886. The cubic root of 688736201 is about 883.1157634641.

The spelling of 688736201 in words is "six hundred eighty-eight million, seven hundred thirty-six thousand, two hundred one".