1674744685 has 4 divisors (see below), whose sum is σ = 2009693628. Its totient is φ = 1339795744.

The previous prime is 1674744667. The next prime is 1674744689. The reversal of 1674744685 is 5864474761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5864474761 = 31513 ⋅186097.

It can be written as a sum of positive squares in 2 ways, for example, as 1227591369 + 447153316 = 35037^2 + 21146^2 .

It is a cyclic number.

It is not a de Polignac number, because 1674744685 - 2⁷ = 1674744557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1674744689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167474464 + ... + 167474473.

It is an arithmetic number, because the mean of its divisors is an integer number (502423407).

Almost surely, 2^1674744685 is an apocalyptic number.

It is an amenable number.

1674744685 is a deficient number, since it is larger than the sum of its proper divisors (334948943).

1674744685 is an equidigital number, since it uses as much as digits as its factorization.

1674744685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334948942.

The product of its digits is 4515840, while the sum is 52.

The square root of 1674744685 is about 40923.6445713233. The cubic root of 1674744685 is about 1187.5435250529.

The spelling of 1674744685 in words is "one billion, six hundred seventy-four million, seven hundred forty-four thousand, six hundred eighty-five".