100668290 has 8 divisors (see below), whose sum is σ = 181202940. Its totient is φ = 40267312.

The previous prime is 100668287. The next prime is 100668299. The reversal of 100668290 is 92866001.

It can be written as a sum of positive squares in 2 ways, for example, as 99580441 + 1087849 = 9979^2 + 1043^2 .

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

It is a super-2 number, since 2×100668290² = 20268209223048200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100668299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5033405 + ... + 5033424.

Almost surely, 2^100668290 is an apocalyptic number.

100668290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100668290 is a deficient number, since it is larger than the sum of its proper divisors (80534650).

100668290 is a wasteful number, since it uses less digits than its factorization.

100668290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10066836.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 100668290 is about 10033.3588593252. The cubic root of 100668290 is about 465.1905643565.

It can be divided in two parts, 1006 and 68290, that added together give a palindrome (69296).

The spelling of 100668290 in words is "one hundred million, six hundred sixty-eight thousand, two hundred ninety".