678378910 has 16 divisors (see below), whose sum is σ = 1332089712. Its totient is φ = 246683200.

The previous prime is 678378901. The next prime is 678378913. The reversal of 678378910 is 19873876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678378913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3083431 + ... + 3083650.

It is an arithmetic number, because the mean of its divisors is an integer number (83255607).

Almost surely, 2^678378910 is an apocalyptic number.

678378910 is a deficient number, since it is larger than the sum of its proper divisors (653710802).

678378910 is a wasteful number, since it uses less digits than its factorization.

678378910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167099.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 678378910 is about 26045.7080917375. The cubic root of 678378910 is about 878.6665885362. Note that the first 3 decimals are identical.

The spelling of 678378910 in words is "six hundred seventy-eight million, three hundred seventy-eight thousand, nine hundred ten".