674206875557 has 2 divisors, whose sum is σ = 674206875558. Its totient is φ = 674206875556.

The previous prime is 674206875487. The next prime is 674206875583. The reversal of 674206875557 is 755578602476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403376144161 + 270830731396 = 635119^2 + 520414^2 .

It is a cyclic number.

It is not a de Polignac number, because 674206875557 - 2³⁴ = 657027006373 is a prime.

It is a super-2 number, since 2×674206875557² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 674206875557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674206875457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337103437778 + 337103437779.

It is an arithmetic number, because the mean of its divisors is an integer number (337103437779).

Almost surely, 2^674206875557 is an apocalyptic number.

It is an amenable number.

674206875557 is a deficient number, since it is larger than the sum of its proper divisors (1).

674206875557 is an equidigital number, since it uses as much as digits as its factorization.

674206875557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784000, while the sum is 62.

The spelling of 674206875557 in words is "six hundred seventy-four billion, two hundred six million, eight hundred seventy-five thousand, five hundred fifty-seven".