287117963 has 8 divisors (see below), whose sum is σ = 316449840. Its totient is φ = 258324480.

The previous prime is 287117953. The next prime is 287118017. The reversal of 287117963 is 369711782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287117963 - 2⁶ = 287117899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287117953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133478 + ... + 135611.

It is an arithmetic number, because the mean of its divisors is an integer number (39556230).

Almost surely, 2^287117963 is an apocalyptic number.

287117963 is a deficient number, since it is larger than the sum of its proper divisors (29331877).

287117963 is a wasteful number, since it uses less digits than its factorization.

287117963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269197.

The product of its digits is 127008, while the sum is 44.

The square root of 287117963 is about 16944.5555562841. Note that the first 5 decimals coincide. The cubic root of 287117963 is about 659.7105885993.

The spelling of 287117963 in words is "two hundred eighty-seven million, one hundred seventeen thousand, nine hundred sixty-three".