675999999 has 24 divisors (see below), whose sum is σ = 1022112000. Its totient is φ = 446437656.

The previous prime is 675999967. The next prime is 676000007. The reversal of 675999999 is 999999576.

It is a Cunningham number, because it is equal to 26000²-1.

It is not a de Polignac number, because 675999999 - 2⁵ = 675999967 is a prime.

675999999 is a modest number, since divided by 99999 gives 6759 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675999949) 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 23 ways as a sum of consecutive naturals, for example, 13002 + ... + 39000.

It is an arithmetic number, because the mean of its divisors is an integer number (42588000).

Almost surely, 2^675999999 is an apocalyptic number.

675999999 is a deficient number, since it is larger than the sum of its proper divisors (346112001).

675999999 is a wasteful number, since it uses less digits than its factorization.

675999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26121 (or 26109 counting only the distinct ones).

The product of its digits is 111602610, while the sum is 72.

The square root of 675999999 is about 25999.9999807692. Note that the first 4 decimals coincide. The cubic root of 675999999 is about 877.6382951002.

The spelling of 675999999 in words is "six hundred seventy-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".