287061 has 8 divisors (see below), whose sum is σ = 386880. Its totient is φ = 189312.

The previous prime is 287059. The next prime is 287087. The reversal of 287061 is 160782.

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

It is not a de Polignac number, because 287061 - 2¹ = 287059 is a prime.

287061 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287061.

It is not an unprimeable number, because it can be changed into a prime (280061) 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, 156 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (48360).

2²⁸⁷⁰⁶¹ is an apocalyptic number.

It is an amenable number.

287061 is a deficient number, since it is larger than the sum of its proper divisors (99819).

287061 is a wasteful number, since it uses less digits than its factorization.

287061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 287061 is about 535.7807387355. The cubic root of 287061 is about 65.9666957776.

The spelling of 287061 in words is "two hundred eighty-seven thousand, sixty-one".