678041305 has 8 divisors (see below), whose sum is σ = 819504000. Its totient is φ = 538530096.

The previous prime is 678041297. The next prime is 678041321. The reversal of 678041305 is 503140876.

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

It is a cyclic number.

It is not a de Polignac number, because 678041305 - 2³ = 678041297 is a prime.

It is a super-2 number, since 2×678041305² = 919480022572206050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487105 + ... + 488494.

It is an arithmetic number, because the mean of its divisors is an integer number (102438000).

Almost surely, 2^678041305 is an apocalyptic number.

It is an amenable number.

678041305 is a deficient number, since it is larger than the sum of its proper divisors (141462695).

678041305 is a wasteful number, since it uses less digits than its factorization.

678041305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975743.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 678041305 is about 26039.2262749875. The cubic root of 678041305 is about 878.5208040038.

The spelling of 678041305 in words is "six hundred seventy-eight million, forty-one thousand, three hundred five".