2665671674 has 4 divisors (see below), whose sum is σ = 3998507514. Its totient is φ = 1332835836.

The previous prime is 2665671667. The next prime is 2665671691. The reversal of 2665671674 is 4761765662.

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

It can be written as a sum of positive squares in only one way, i.e., 2642679649 + 22992025 = 51407^2 + 4795^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666417917 + ... + 666417920.

Almost surely, 2^2665671674 is an apocalyptic number.

2665671674 is a deficient number, since it is larger than the sum of its proper divisors (1332835840).

2665671674 is a wasteful number, since it uses less digits than its factorization.

2665671674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332835839.

The product of its digits is 2540160, while the sum is 50.

The square root of 2665671674 is about 51630.1430755329. The cubic root of 2665671674 is about 1386.5500548999.

The spelling of 2665671674 in words is "two billion, six hundred sixty-five million, six hundred seventy-one thousand, six hundred seventy-four".