561373678 has 8 divisors (see below), whose sum is σ = 842292360. Its totient is φ = 280609560.

The previous prime is 561373669. The next prime is 561373739. The reversal of 561373678 is 876373165.

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

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 29088 + ... + 44371.

It is an arithmetic number, because the mean of its divisors is an integer number (105286545).

Almost surely, 2^561373678 is an apocalyptic number.

561373678 is a deficient number, since it is larger than the sum of its proper divisors (280918682).

561373678 is a wasteful number, since it uses less digits than its factorization.

561373678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77282.

The product of its digits is 635040, while the sum is 46.

The square root of 561373678 is about 23693.3256002614. The cubic root of 561373678 is about 824.9304761737.

The spelling of 561373678 in words is "five hundred sixty-one million, three hundred seventy-three thousand, six hundred seventy-eight".