287641567 has 2 divisors, whose sum is σ = 287641568. Its totient is φ = 287641566.

The previous prime is 287641559. The next prime is 287641619. The reversal of 287641567 is 765146782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 287641567 - 2³ = 287641559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287641507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143820783 + 143820784.

It is an arithmetic number, because the mean of its divisors is an integer number (143820784).

Almost surely, 2^287641567 is an apocalyptic number.

287641567 is a deficient number, since it is larger than the sum of its proper divisors (1).

287641567 is an equidigital number, since it uses as much as digits as its factorization.

287641567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The square root of 287641567 is about 16959.9990271226. Note that the first 3 decimals coincide. The cubic root of 287641567 is about 660.1113731548. Note that the first 3 decimals are identical.

The spelling of 287641567 in words is "two hundred eighty-seven million, six hundred forty-one thousand, five hundred sixty-seven".