287721463 has 2 divisors, whose sum is σ = 287721464. Its totient is φ = 287721462.

The previous prime is 287721449. The next prime is 287721479. The reversal of 287721463 is 364127782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 287721463 - 2⁵ = 287721431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287721403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143860731 + 143860732.

It is an arithmetic number, because the mean of its divisors is an integer number (143860732).

Almost surely, 2^287721463 is an apocalyptic number.

287721463 is a deficient number, since it is larger than the sum of its proper divisors (1).

287721463 is an equidigital number, since it uses as much as digits as its factorization.

287721463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 287721463 is about 16962.3542882467. The cubic root of 287721463 is about 660.1724855275.

The spelling of 287721463 in words is "two hundred eighty-seven million, seven hundred twenty-one thousand, four hundred sixty-three".