688022341 has 4 divisors (see below), whose sum is σ = 689063884. Its totient is φ = 686980800.

The previous prime is 688022333. The next prime is 688022347. The reversal of 688022341 is 143220886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 414285316 + 273737025 = 20354^2 + 16545^2 .

It is a cyclic number.

It is not a de Polignac number, because 688022341 - 2³ = 688022333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 688022297 and 688022306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688022347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519780 + ... + 521101.

It is an arithmetic number, because the mean of its divisors is an integer number (172265971).

Almost surely, 2^688022341 is an apocalyptic number.

It is an amenable number.

688022341 is a deficient number, since it is larger than the sum of its proper divisors (1041543).

688022341 is a wasteful number, since it uses less digits than its factorization.

688022341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041542.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 688022341 is about 26230.1799650708. The cubic root of 688022341 is about 882.8105479359.

The spelling of 688022341 in words is "six hundred eighty-eight million, twenty-two thousand, three hundred forty-one".