677644839 has 16 divisors (see below), whose sum is σ = 1004451840. Its totient is φ = 451523160.

The previous prime is 677644829. The next prime is 677644853. The reversal of 677644839 is 938446776.

It is a happy number.

It is not a de Polignac number, because 677644839 - 2¹⁶ = 677579303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677644829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55674 + ... + 66744.

It is an arithmetic number, because the mean of its divisors is an integer number (62778240).

Almost surely, 2^677644839 is an apocalyptic number.

677644839 is a deficient number, since it is larger than the sum of its proper divisors (326807001).

677644839 is a wasteful number, since it uses less digits than its factorization.

677644839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347 (or 13341 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 677644839 is about 26031.6123012002. The cubic root of 677644839 is about 878.3495403283.

It can be divided in two parts, 6776 and 44839, that added together give a palindrome (51615).

The spelling of 677644839 in words is "six hundred seventy-seven million, six hundred forty-four thousand, eight hundred thirty-nine".