106644387 has 8 divisors (see below), whose sum is σ = 142240336. Its totient is φ = 71072352.

The previous prime is 106644379. The next prime is 106644389. The reversal of 106644387 is 783446601.

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

It is not a de Polignac number, because 106644387 - 2³ = 106644379 is a prime.

It is a super-2 number, since 2×106644387² = 22746050557211538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106644389) 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, 13473 + ... + 19869.

It is an arithmetic number, because the mean of its divisors is an integer number (17780042).

Almost surely, 2^106644387 is an apocalyptic number.

106644387 is a deficient number, since it is larger than the sum of its proper divisors (35595949).

106644387 is an equidigital number, since it uses as much as digits as its factorization.

106644387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 106644387 is about 10326.8769238333. The cubic root of 106644387 is about 474.2194189673.

It can be divided in two parts, 1066443 and 87, that added together give a triangular number (1066530 = T₁₄₆₀).

The spelling of 106644387 in words is "one hundred six million, six hundred forty-four thousand, three hundred eighty-seven".