677891941 has 2 divisors, whose sum is σ = 677891942. Its totient is φ = 677891940.

The previous prime is 677891933. The next prime is 677892049. The reversal of 677891941 is 149198776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541492900 + 136399041 = 23270^2 + 11679^2 .

It is a cyclic number.

It is not a de Polignac number, because 677891941 - 2³ = 677891933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677891141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338945970 + 338945971.

It is an arithmetic number, because the mean of its divisors is an integer number (338945971).

Almost surely, 2^677891941 is an apocalyptic number.

It is an amenable number.

677891941 is a deficient number, since it is larger than the sum of its proper divisors (1).

677891941 is an equidigital number, since it uses as much as digits as its factorization.

677891941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 52.

The square root of 677891941 is about 26036.3580594522. The cubic root of 677891941 is about 878.4562902262.

The spelling of 677891941 in words is "six hundred seventy-seven million, eight hundred ninety-one thousand, nine hundred forty-one".