688228603 has 2 divisors, whose sum is σ = 688228604. Its totient is φ = 688228602.

The previous prime is 688228591. The next prime is 688228633. The reversal of 688228603 is 306822886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 688228603 - 2²⁵ = 654674171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 688228603.

It is not a weakly prime, because it can be changed into another prime (688228633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344114301 + 344114302.

It is an arithmetic number, because the mean of its divisors is an integer number (344114302).

Almost surely, 2^688228603 is an apocalyptic number.

688228603 is a deficient number, since it is larger than the sum of its proper divisors (1).

688228603 is an equidigital number, since it uses as much as digits as its factorization.

688228603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 688228603 is about 26234.1114391168. Note that the first 3 decimals coincide. The cubic root of 688228603 is about 882.8987582866.

It can be divided in two parts, 68822 and 8603, that multiplied together give a triangular number (592075666 = T₃₄₄₁₁).

The spelling of 688228603 in words is "six hundred eighty-eight million, two hundred twenty-eight thousand, six hundred three".