576640978 has 4 divisors (see below), whose sum is σ = 864961470. Its totient is φ = 288320488.

The previous prime is 576640963. The next prime is 576640997. The reversal of 576640978 is 879046675.

It is a happy number.

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., 537915249 + 38725729 = 23193^2 + 6223^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 144160243 + ... + 144160246.

Almost surely, 2^576640978 is an apocalyptic number.

576640978 is a deficient number, since it is larger than the sum of its proper divisors (288320492).

576640978 is a wasteful number, since it uses less digits than its factorization.

576640978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288320491.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The square root of 576640978 is about 24013.3499953672. The cubic root of 576640978 is about 832.3420462831.

The spelling of 576640978 in words is "five hundred seventy-six million, six hundred forty thousand, nine hundred seventy-eight".