677531891027 has 4 divisors (see below), whose sum is σ = 677555346936. Its totient is φ = 677508435120.

The previous prime is 677531891011. The next prime is 677531891039. The reversal of 677531891027 is 720198135776.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677531891027 - 2⁴ = 677531891011 is a prime.

It is a super-2 number, since 2×677531891027² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677531891077) 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 in 3 ways as a sum of consecutive naturals, for example, 11684573 + ... + 11742414.

It is an arithmetic number, because the mean of its divisors is an integer number (169388836734).

Almost surely, 2^677531891027 is an apocalyptic number.

677531891027 is a deficient number, since it is larger than the sum of its proper divisors (23455909).

677531891027 is a wasteful number, since it uses less digits than its factorization.

677531891027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23455908.

The product of its (nonzero) digits is 4445280, while the sum is 56.

The spelling of 677531891027 in words is "six hundred seventy-seven billion, five hundred thirty-one million, eight hundred ninety-one thousand, twenty-seven".