677873381 has 2 divisors, whose sum is σ = 677873382. Its totient is φ = 677873380.

The previous prime is 677873369. The next prime is 677873387. The reversal of 677873381 is 183378776.

677873381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677560900 + 312481 = 26030^2 + 559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677873381 is a prime.

It is a super-2 number, since 2×677873381² = 919024641336742322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677873387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338936690 + 338936691.

It is an arithmetic number, because the mean of its divisors is an integer number (338936691).

Almost surely, 2^677873381 is an apocalyptic number.

It is an amenable number.

677873381 is a deficient number, since it is larger than the sum of its proper divisors (1).

677873381 is an equidigital number, since it uses as much as digits as its factorization.

677873381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 50.

The square root of 677873381 is about 26036.0016323551. The cubic root of 677873381 is about 878.4482730696.

The spelling of 677873381 in words is "six hundred seventy-seven million, eight hundred seventy-three thousand, three hundred eighty-one".