1005668651 has 8 divisors (see below), whose sum is σ = 1140029520. Its totient is φ = 879450912.

The previous prime is 1005668647. The next prime is 1005668669. The reversal of 1005668651 is 1568665001.

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

It is a cyclic number.

It is not a de Polignac number, because 1005668651 - 2² = 1005668647 is a prime.

It is a super-2 number, since 2×1005668651² = 2022738871208319602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005668051) 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 7 ways as a sum of consecutive naturals, for example, 2035520 + ... + 2036013.

It is an arithmetic number, because the mean of its divisors is an integer number (142503690).

Almost surely, 2^1005668651 is an apocalyptic number.

1005668651 is a deficient number, since it is larger than the sum of its proper divisors (134360869).

1005668651 is a wasteful number, since it uses less digits than its factorization.

1005668651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071565.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1005668651 is about 31712.2791833069. The cubic root of 1005668651 is about 1001.8859911346.

The spelling of 1005668651 in words is "one billion, five million, six hundred sixty-eight thousand, six hundred fifty-one".