287036683812649 has 9 divisors (see below), whose sum is σ = 287347348869861. Its totient is φ = 286726354322880.

The previous prime is 287036683812409. The next prime is 287036683812679. The reversal of 287036683812649 is 946218386630782.

The square root of 287036683812649 is 16942157.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 201630770105625 + 85405913707024 = 14199675^2 + 9241532^2 .

It is not a de Polignac number, because 287036683812649 - 2¹¹ = 287036683810601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287036683812679) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16552478719 + ... + 16552496059.

Almost surely, 2^{287036683812649} is an apocalyptic number.

287036683812649 is the 16942157-th square number.

287036683812649 is the 8471079-th centered octagonal number.

It is an amenable number.

287036683812649 is a deficient number, since it is larger than the sum of its proper divisors (310665057212).

287036683812649 is an frugal number, since it uses more digits than its factorization.

287036683812649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36636 (or 18318 counting only the distinct ones).

The product of its (nonzero) digits is 1003290624, while the sum is 73.

The spelling of 287036683812649 in words is "two hundred eighty-seven trillion, thirty-six billion, six hundred eighty-three million, eight hundred twelve thousand, six hundred forty-nine".