288628657 has 2 divisors, whose sum is σ = 288628658. Its totient is φ = 288628656.

The previous prime is 288628603. The next prime is 288628663. The reversal of 288628657 is 756826882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186295201 + 102333456 = 13649^2 + 10116^2 .

It is a cyclic number.

It is not a de Polignac number, because 288628657 - 2¹⁵ = 288595889 is a prime.

It is not a weakly prime, because it can be changed into another prime (288628667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144314328 + 144314329.

It is an arithmetic number, because the mean of its divisors is an integer number (144314329).

Almost surely, 2^288628657 is an apocalyptic number.

It is an amenable number.

288628657 is a deficient number, since it is larger than the sum of its proper divisors (1).

288628657 is an equidigital number, since it uses as much as digits as its factorization.

288628657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 52.

The square root of 288628657 is about 16989.0746363656. The cubic root of 288628657 is about 660.8656051365.

The spelling of 288628657 in words is "two hundred eighty-eight million, six hundred twenty-eight thousand, six hundred fifty-seven".