287428597 has 2 divisors, whose sum is σ = 287428598. Its totient is φ = 287428596.

The previous prime is 287428577. The next prime is 287428619. The reversal of 287428597 is 795824782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278422596 + 9006001 = 16686^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 287428597 - 2¹¹ = 287426549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287428507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143714298 + 143714299.

It is an arithmetic number, because the mean of its divisors is an integer number (143714299).

Almost surely, 2^287428597 is an apocalyptic number.

It is an amenable number.

287428597 is a deficient number, since it is larger than the sum of its proper divisors (1).

287428597 is an equidigital number, since it uses as much as digits as its factorization.

287428597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 52.

The square root of 287428597 is about 16953.7192674646. The cubic root of 287428597 is about 659.9484173032.

The spelling of 287428597 in words is "two hundred eighty-seven million, four hundred twenty-eight thousand, five hundred ninety-seven".