877781145 has 64 divisors (see below), whose sum is σ = 1532424960. Its totient is φ = 428811264.

The previous prime is 877781063. The next prime is 877781153. The reversal of 877781145 is 541187778.

It is not a de Polignac number, because 877781145 - 2⁹ = 877780633 is a prime.

It is a super-2 number, since 2×877781145² = 1540999477035022050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 877781094 and 877781103.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 3168747 + ... + 3169023.

It is an arithmetic number, because the mean of its divisors is an integer number (23944140).

Almost surely, 2^877781145 is an apocalyptic number.

877781145 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

877781145 is a deficient number, since it is larger than the sum of its proper divisors (654643815).

877781145 is a wasteful number, since it uses less digits than its factorization.

877781145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 345 counting only the distinct ones).

The product of its digits is 439040, while the sum is 48.

The square root of 877781145 is about 29627.3715506455. The cubic root of 877781145 is about 957.4778794482.

The spelling of 877781145 in words is "eight hundred seventy-seven million, seven hundred eighty-one thousand, one hundred forty-five".