1000100665 has 16 divisors (see below), whose sum is σ = 1236312000. Its totient is φ = 776204352.

The previous prime is 1000100653. The next prime is 1000100677. The reversal of 1000100665 is 5660010001.

It is an interprime number because it is at equal distance from previous prime (1000100653) and next prime (1000100677).

It is not a de Polignac number, because 1000100665 - 2⁷ = 1000100537 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 16426 + ... + 47644.

It is an arithmetic number, because the mean of its divisors is an integer number (77269500).

Almost surely, 2^1000100665 is an apocalyptic number.

It is an amenable number.

1000100665 is a deficient number, since it is larger than the sum of its proper divisors (236211335).

1000100665 is a wasteful number, since it uses less digits than its factorization.

1000100665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31416.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1000100665 is about 31624.3682150332. The cubic root of 1000100665 is about 1000.0335538741.

Adding to 1000100665 its reverse (5660010001), we get a palindrome (6660110666).

The spelling of 1000100665 in words is "one billion, one hundred thousand, six hundred sixty-five".