678374599 has 4 divisors (see below), whose sum is σ = 775285264. Its totient is φ = 581463936.

The previous prime is 678374569. The next prime is 678374639. The reversal of 678374599 is 995473876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 678374599 - 2⁹ = 678374087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678374569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48455322 + ... + 48455335.

It is an arithmetic number, because the mean of its divisors is an integer number (193821316).

Almost surely, 2^678374599 is an apocalyptic number.

678374599 is a deficient number, since it is larger than the sum of its proper divisors (96910665).

678374599 is an equidigital number, since it uses as much as digits as its factorization.

678374599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96910664.

The product of its digits is 11430720, while the sum is 58.

The square root of 678374599 is about 26045.6253332493. The cubic root of 678374599 is about 878.6647272659.

The spelling of 678374599 in words is "six hundred seventy-eight million, three hundred seventy-four thousand, five hundred ninety-nine".