106987391 has 8 divisors (see below), whose sum is σ = 122449440. Its totient is φ = 91569888.

The previous prime is 106987379. The next prime is 106987393. The reversal of 106987391 is 193789601.

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

It is a cyclic number.

It is not a de Polignac number, because 106987391 - 2¹⁰ = 106986367 is a prime.

It is a super-2 number, since 2×106987391² = 22892603665973762, 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 (106987393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5816 + ... + 15741.

It is an arithmetic number, because the mean of its divisors is an integer number (15306180).

Almost surely, 2^106987391 is an apocalyptic number.

106987391 is a deficient number, since it is larger than the sum of its proper divisors (15462049).

106987391 is an equidigital number, since it uses as much as digits as its factorization.

106987391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22273.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 106987391 is about 10343.4709358126. The cubic root of 106987391 is about 474.7272909218.

The spelling of 106987391 in words is "one hundred six million, nine hundred eighty-seven thousand, three hundred ninety-one".