548779645 has 8 divisors (see below), whose sum is σ = 663274080. Its totient is φ = 435864720.

The previous prime is 548779643. The next prime is 548779663. The reversal of 548779645 is 546977845.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 548779645 - 2¹ = 548779643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548779643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394111 + ... + 395500.

It is an arithmetic number, because the mean of its divisors is an integer number (82909260).

Almost surely, 2^548779645 is an apocalyptic number.

It is an amenable number.

548779645 is a deficient number, since it is larger than the sum of its proper divisors (114494435).

548779645 is a wasteful number, since it uses less digits than its factorization.

548779645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789755.

The product of its digits is 8467200, while the sum is 55.

The square root of 548779645 is about 23426.0462946695. The cubic root of 548779645 is about 818.7148444008.

The spelling of 548779645 in words is "five hundred forty-eight million, seven hundred seventy-nine thousand, six hundred forty-five".