287487061 has 4 divisors (see below), whose sum is σ = 287883232. Its totient is φ = 287090892.

The previous prime is 287487059. The next prime is 287487089. The reversal of 287487061 is 160784782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160784782 = 2 ⋅80392391.

It is a cyclic number.

It is not a de Polignac number, because 287487061 - 2¹ = 287487059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 287486999 and 287487017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287487001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196995 + ... + 198448.

It is an arithmetic number, because the mean of its divisors is an integer number (71970808).

Almost surely, 2^287487061 is an apocalyptic number.

It is an amenable number.

287487061 is a deficient number, since it is larger than the sum of its proper divisors (396171).

287487061 is an equidigital number, since it uses as much as digits as its factorization.

287487061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396170.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 287487061 is about 16955.4434032260. The cubic root of 287487061 is about 659.9931595557.

The spelling of 287487061 in words is "two hundred eighty-seven million, four hundred eighty-seven thousand, sixty-one".