545636786 has 4 divisors (see below), whose sum is σ = 818455182. Its totient is φ = 272818392.

The previous prime is 545636753. The next prime is 545636789. The reversal of 545636786 is 687636545.

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., 513883561 + 31753225 = 22669^2 + 5635^2 .

It is not an unprimeable number, because it can be changed into a prime (545636789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136409195 + ... + 136409198.

Almost surely, 2^545636786 is an apocalyptic number.

545636786 is a deficient number, since it is larger than the sum of its proper divisors (272818396).

545636786 is a wasteful number, since it uses less digits than its factorization.

545636786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272818395.

The product of its digits is 3628800, while the sum is 50.

The square root of 545636786 is about 23358.8695360028. The cubic root of 545636786 is about 817.1489256184.

The spelling of 545636786 in words is "five hundred forty-five million, six hundred thirty-six thousand, seven hundred eighty-six".