674522749 has 4 divisors (see below), whose sum is σ = 674673340. Its totient is φ = 674372160.

The previous prime is 674522741. The next prime is 674522773. The reversal of 674522749 is 947225476.

It is a happy number.

674522749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 229734649 + 444788100 = 15157^2 + 21090^2 .

It is a cyclic number.

It is not a de Polignac number, because 674522749 - 2³ = 674522741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 674522699 and 674522708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674522741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68364 + ... + 77605.

It is an arithmetic number, because the mean of its divisors is an integer number (168668335).

Almost surely, 2^674522749 is an apocalyptic number.

It is an amenable number.

674522749 is a deficient number, since it is larger than the sum of its proper divisors (150591).

674522749 is a wasteful number, since it uses less digits than its factorization.

674522749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150590.

The product of its digits is 846720, while the sum is 46.

The square root of 674522749 is about 25971.5757896975. The cubic root of 674522749 is about 876.9985334035.

The spelling of 674522749 in words is "six hundred seventy-four million, five hundred twenty-two thousand, seven hundred forty-nine".