106990887 has 4 divisors (see below), whose sum is σ = 142654520. Its totient is φ = 71327256.

The previous prime is 106990883. The next prime is 106990913. The reversal of 106990887 is 788099601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 106990887 - 2² = 106990883 is a prime.

It is a super-2 number, since 2×106990887² = 22894099802093538, 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 (106990883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17831812 + ... + 17831817.

It is an arithmetic number, because the mean of its divisors is an integer number (35663630).

Almost surely, 2^106990887 is an apocalyptic number.

106990887 is a deficient number, since it is larger than the sum of its proper divisors (35663633).

106990887 is an equidigital number, since it uses as much as digits as its factorization.

106990887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35663632.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 106990887 is about 10343.6399299280. The cubic root of 106990887 is about 474.7324617135.

The spelling of 106990887 in words is "one hundred six million, nine hundred ninety thousand, eight hundred eighty-seven".