688274201 has 4 divisors (see below), whose sum is σ = 688326672. Its totient is φ = 688221732.

The previous prime is 688274143. The next prime is 688274231. The reversal of 688274201 is 102472886.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102472886 = 2 ⋅51236443.

It is a cyclic number.

It is not a de Polignac number, because 688274201 - 2¹⁸ = 688012057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (688274231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13070 + ... + 39336.

It is an arithmetic number, because the mean of its divisors is an integer number (172081668).

Almost surely, 2^688274201 is an apocalyptic number.

It is an amenable number.

688274201 is a deficient number, since it is larger than the sum of its proper divisors (52471).

688274201 is a wasteful number, since it uses less digits than its factorization.

688274201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52470.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 688274201 is about 26234.9804840789. The cubic root of 688274201 is about 882.9182564244.

The spelling of 688274201 in words is "six hundred eighty-eight million, two hundred seventy-four thousand, two hundred one".