674887788477 has 18 divisors (see below), whose sum is σ = 1133995128318. Its totient is φ = 385650164592.

The previous prime is 674887788433. The next prime is 674887788479. The reversal of 674887788477 is 774887788476.

674887788477 is a `hidden beast` number, since 6 + 74 + 8 + 8 + 7 + 78 + 8 + 477 = 666.

It can be written as a sum of positive squares in only one way, i.e., 668217962916 + 6669825561 = 817446^2 + 81669^2 .

It is not a de Polignac number, because 674887788477 - 2⁶ = 674887788413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 674887788396 and 674887788405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674887788479) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 765178458 + ... + 765179339.

It is an arithmetic number, because the mean of its divisors is an integer number (62999729351).

Almost surely, 2^674887788477 is an apocalyptic number.

It is an amenable number.

674887788477 is a deficient number, since it is larger than the sum of its proper divisors (459107339841).

674887788477 is a wasteful number, since it uses less digits than its factorization.

674887788477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530357817 (or 1530357807 counting only the distinct ones).

The product of its digits is 6608781312, while the sum is 81.

Subtracting 674887788477 from its reverse (774887788476), we obtain a palindrome (99999999999).

The spelling of 674887788477 in words is "six hundred seventy-four billion, eight hundred eighty-seven million, seven hundred eighty-eight thousand, four hundred seventy-seven".