674408965 has 4 divisors (see below), whose sum is σ = 809290764. Its totient is φ = 539527168.

The previous prime is 674408963. The next prime is 674408983. The reversal of 674408965 is 569804476.

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 425968321 + 248440644 = 20639^2 + 15762^2 .

It is a cyclic number.

It is not a de Polignac number, because 674408965 - 2¹ = 674408963 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674408963) 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 3 ways as a sum of consecutive naturals, for example, 67440892 + ... + 67440901.

It is an arithmetic number, because the mean of its divisors is an integer number (202322691).

Almost surely, 2^674408965 is an apocalyptic number.

It is an amenable number.

674408965 is a deficient number, since it is larger than the sum of its proper divisors (134881799).

674408965 is a wasteful number, since it uses less digits than its factorization.

674408965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134881798.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 674408965 is about 25969.3851486707. The cubic root of 674408965 is about 876.9492175414.

The spelling of 674408965 in words is "six hundred seventy-four million, four hundred eight thousand, nine hundred sixty-five".