540086786 has 4 divisors (see below), whose sum is σ = 810130182. Its totient is φ = 270043392.

The previous prime is 540086779. The next prime is 540086791. The reversal of 540086786 is 687680045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 336025561 + 204061225 = 18331^2 + 14285^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135021695 + ... + 135021698.

Almost surely, 2^540086786 is an apocalyptic number.

540086786 is a deficient number, since it is larger than the sum of its proper divisors (270043396).

540086786 is a wasteful number, since it uses less digits than its factorization.

540086786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270043395.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 540086786 is about 23239.7673396271. The cubic root of 540086786 is about 814.3689073541.

The spelling of 540086786 in words is "five hundred forty million, eighty-six thousand, seven hundred eighty-six".