674005749 has 16 divisors (see below), whose sum is σ = 954600192. Its totient is φ = 421544448.

The previous prime is 674005747. The next prime is 674005771. The reversal of 674005749 is 947500476.

It is not a de Polignac number, because 674005749 - 2¹ = 674005747 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 674005749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674005741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5149 + ... + 37074.

It is an arithmetic number, because the mean of its divisors is an integer number (59662512).

Almost surely, 2^674005749 is an apocalyptic number.

It is an amenable number.

674005749 is a deficient number, since it is larger than the sum of its proper divisors (280594443).

674005749 is a wasteful number, since it uses less digits than its factorization.

674005749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42556.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 674005749 is about 25961.6206928612. The cubic root of 674005749 is about 876.7744124070.

The spelling of 674005749 in words is "six hundred seventy-four million, five thousand, seven hundred forty-nine".