678377 has 4 divisors (see below), whose sum is σ = 775296. Its totient is φ = 581460.

The previous prime is 678371. The next prime is 678383. The reversal of 678377 is 773876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (678371) and next prime (678383).

It is a cyclic number.

It is not a de Polignac number, because 678377 - 2¹⁴ = 661993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 678377.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678377.

It is not an unprimeable number, because it can be changed into a prime (678371) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48449 + ... + 48462.

It is an arithmetic number, because the mean of its divisors is an integer number (193824).

2⁶⁷⁸³⁷⁷ is an apocalyptic number.

It is an amenable number.

678377 is a deficient number, since it is larger than the sum of its proper divisors (96919).

678377 is an equidigital number, since it uses as much as digits as its factorization.

678377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96918.

The product of its digits is 49392, while the sum is 38.

The square root of 678377 is about 823.6364489263. The cubic root of 678377 is about 87.8665763896.

The spelling of 678377 in words is "six hundred seventy-eight thousand, three hundred seventy-seven".