677678293 has 8 divisors (see below), whose sum is σ = 742285080. Its totient is φ = 615820800.

The previous prime is 677678251. The next prime is 677678329. The reversal of 677678293 is 392876776.

It can be written as a sum of positive squares in 4 ways, for example, as 157929489 + 519748804 = 12567^2 + 22798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-677678293 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 (677678213) 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 7 ways as a sum of consecutive naturals, for example, 686808 + ... + 687793.

It is an arithmetic number, because the mean of its divisors is an integer number (92785635).

Almost surely, 2^677678293 is an apocalyptic number.

It is an amenable number.

677678293 is a deficient number, since it is larger than the sum of its proper divisors (64606787).

677678293 is a wasteful number, since it uses less digits than its factorization.

677678293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374647.

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

The square root of 677678293 is about 26032.2548581563. The cubic root of 677678293 is about 878.3639942232.

The spelling of 677678293 in words is "six hundred seventy-seven million, six hundred seventy-eight thousand, two hundred ninety-three".