2605767634 has 8 divisors (see below), whose sum is σ = 3919725180. Its totient is φ = 1299192576.

The previous prime is 2605767629. The next prime is 2605767641. The reversal of 2605767634 is 4367675062.

It can be written as a sum of positive squares in 2 ways, for example, as 2362251609 + 243516025 = 48603^2 + 15605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 1844739 + ... + 1846150.

Almost surely, 2^2605767634 is an apocalyptic number.

2605767634 is a deficient number, since it is larger than the sum of its proper divisors (1313957546).

2605767634 is a wasteful number, since it uses less digits than its factorization.

2605767634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691244.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The square root of 2605767634 is about 51046.7201101109. The cubic root of 2605767634 is about 1376.0848974260.

The spelling of 2605767634 in words is "two billion, six hundred five million, seven hundred sixty-seven thousand, six hundred thirty-four".