678881373 has 4 divisors (see below), whose sum is σ = 905175168. Its totient is φ = 452587580.

The previous prime is 678881351. The next prime is 678881389. The reversal of 678881373 is 373188876.

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 a cyclic number.

It is not a de Polignac number, because 678881373 - 2⁶ = 678881309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678881303) 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, 113146893 + ... + 113146898.

It is an arithmetic number, because the mean of its divisors is an integer number (226293792).

Almost surely, 2^678881373 is an apocalyptic number.

It is an amenable number.

678881373 is a deficient number, since it is larger than the sum of its proper divisors (226293795).

678881373 is a wasteful number, since it uses less digits than its factorization.

678881373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226293794.

The product of its digits is 1354752, while the sum is 51.

The square root of 678881373 is about 26055.3520989450. The cubic root of 678881373 is about 878.8834724858.

The spelling of 678881373 in words is "six hundred seventy-eight million, eight hundred eighty-one thousand, three hundred seventy-three".