677418317 has 2 divisors, whose sum is σ = 677418318. Its totient is φ = 677418316.

The previous prime is 677418289. The next prime is 677418347. The reversal of 677418317 is 713814776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476374276 + 201044041 = 21826^2 + 14179^2 .

It is a cyclic number.

It is not a de Polignac number, because 677418317 - 2²⁰ = 676369741 is a prime.

It is a super-2 number, since 2×677418317² = 917791152414224978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677418347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338709158 + 338709159.

It is an arithmetic number, because the mean of its divisors is an integer number (338709159).

Almost surely, 2^677418317 is an apocalyptic number.

It is an amenable number.

677418317 is a deficient number, since it is larger than the sum of its proper divisors (1).

677418317 is an equidigital number, since it uses as much as digits as its factorization.

677418317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 44.

The square root of 677418317 is about 26027.2610353068. The cubic root of 677418317 is about 878.2516583419.

The spelling of 677418317 in words is "six hundred seventy-seven million, four hundred eighteen thousand, three hundred seventeen".