677400186373 has 2 divisors, whose sum is σ = 677400186374. Its totient is φ = 677400186372.

The previous prime is 677400186371. The next prime is 677400186389. The reversal of 677400186373 is 373681004776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410133933889 + 267266252484 = 640417^2 + 516978^2 .

It is a cyclic number.

It is not a de Polignac number, because 677400186373 - 2¹ = 677400186371 is a prime.

It is a super-4 number, since 4×677400186373⁴ (a number of 48 digits) contains 4444 as substring.

Together with 677400186371, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 677400186373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677400186371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338700093186 + 338700093187.

It is an arithmetic number, because the mean of its divisors is an integer number (338700093187).

Almost surely, 2^677400186373 is an apocalyptic number.

It is an amenable number.

677400186373 is a deficient number, since it is larger than the sum of its proper divisors (1).

677400186373 is an equidigital number, since it uses as much as digits as its factorization.

677400186373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The spelling of 677400186373 in words is "six hundred seventy-seven billion, four hundred million, one hundred eighty-six thousand, three hundred seventy-three".