678535379 has 4 divisors (see below), whose sum is σ = 679274640. Its totient is φ = 677796120.

The previous prime is 678535373. The next prime is 678535387. The reversal of 678535379 is 973535876.

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 678535379 - 2²⁸ = 410099923 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 678535379.

It is not an unprimeable number, because it can be changed into a prime (678535373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368252 + ... + 370089.

It is an arithmetic number, because the mean of its divisors is an integer number (169818660).

Almost surely, 2^678535379 is an apocalyptic number.

678535379 is a deficient number, since it is larger than the sum of its proper divisors (739261).

678535379 is an equidigital number, since it uses as much as digits as its factorization.

678535379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739260.

The product of its digits is 4762800, while the sum is 53.

The square root of 678535379 is about 26048.7116572010. The cubic root of 678535379 is about 878.7341385497.

The spelling of 678535379 in words is "six hundred seventy-eight million, five hundred thirty-five thousand, three hundred seventy-nine".