678693277 has 4 divisors (see below), whose sum is σ = 680225760. Its totient is φ = 677160796.

The previous prime is 678693251. The next prime is 678693283. The reversal of 678693277 is 772396876.

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 678693277 - 2²³ = 670304669 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 (678693247) 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, 765577 + ... + 766462.

It is an arithmetic number, because the mean of its divisors is an integer number (170056440).

Almost surely, 2^678693277 is an apocalyptic number.

It is an amenable number.

678693277 is a deficient number, since it is larger than the sum of its proper divisors (1532483).

678693277 is a wasteful number, since it uses less digits than its factorization.

678693277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532482.

The product of its digits is 5334336, while the sum is 55.

The square root of 678693277 is about 26051.7423025793. The cubic root of 678693277 is about 878.8022949574.

The spelling of 678693277 in words is "six hundred seventy-eight million, six hundred ninety-three thousand, two hundred seventy-seven".