2566629628 has 6 divisors (see below), whose sum is σ = 4491601856. Its totient is φ = 1283314812.

The previous prime is 2566629617. The next prime is 2566629629. The reversal of 2566629628 is 8269266652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566629629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320828700 + ... + 320828707.

Almost surely, 2^2566629628 is an apocalyptic number.

It is an amenable number.

2566629628 is a deficient number, since it is larger than the sum of its proper divisors (1924972228).

2566629628 is a wasteful number, since it uses less digits than its factorization.

2566629628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641657411 (or 641657409 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The square root of 2566629628 is about 50661.9149657808. The cubic root of 2566629628 is about 1369.1606253026.

The spelling of 2566629628 in words is "two billion, five hundred sixty-six million, six hundred twenty-nine thousand, six hundred twenty-eight".