877381643 has 2 divisors, whose sum is σ = 877381644. Its totient is φ = 877381642.

The previous prime is 877381597. The next prime is 877381717. The reversal of 877381643 is 346183778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 877381643 - 2⁶ = 877381579 is a prime.

It is not a weakly prime, because it can be changed into another prime (877384643) 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 as a sum of consecutive naturals, namely, 438690821 + 438690822.

It is an arithmetic number, because the mean of its divisors is an integer number (438690822).

Almost surely, 2^877381643 is an apocalyptic number.

877381643 is a deficient number, since it is larger than the sum of its proper divisors (1).

877381643 is an equidigital number, since it uses as much as digits as its factorization.

877381643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The square root of 877381643 is about 29620.6286732743. The cubic root of 877381643 is about 957.3325993574.

The spelling of 877381643 in words is "eight hundred seventy-seven million, three hundred eighty-one thousand, six hundred forty-three".