678110465 has 16 divisors (see below), whose sum is σ = 835299216. Its totient is φ = 528288000.

The previous prime is 678110441. The next prime is 678110479. The reversal of 678110465 is 564011876.

It can be written as a sum of positive squares in 8 ways, for example, as 237169 + 677873296 = 487^2 + 26036^2 .

It is not a de Polignac number, because 678110465 - 2¹⁶ = 678044929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 19799 + ... + 41811.

It is an arithmetic number, because the mean of its divisors is an integer number (52206201).

Almost surely, 2^678110465 is an apocalyptic number.

It is an amenable number.

678110465 is a deficient number, since it is larger than the sum of its proper divisors (157188751).

678110465 is a wasteful number, since it uses less digits than its factorization.

678110465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22180.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 678110465 is about 26040.5542375734. The cubic root of 678110465 is about 878.5506726036.

The spelling of 678110465 in words is "six hundred seventy-eight million, one hundred ten thousand, four hundred sixty-five".