100990655 has 8 divisors (see below), whose sum is σ = 121244352. Its totient is φ = 80755488.

The previous prime is 100990621. The next prime is 100990657. The reversal of 100990655 is 556099001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100990655 is a prime.

It is a super-2 number, since 2×100990655² = 20398224794658050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100990657) 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, 14714 + ... + 20456.

It is an arithmetic number, because the mean of its divisors is an integer number (15155544).

Almost surely, 2^100990655 is an apocalyptic number.

100990655 is a deficient number, since it is larger than the sum of its proper divisors (20253697).

100990655 is an equidigital number, since it uses as much as digits as its factorization.

100990655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9265.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 100990655 is about 10049.4106792389. The cubic root of 100990655 is about 465.6865873823.

The spelling of 100990655 in words is "one hundred million, nine hundred ninety thousand, six hundred fifty-five".