106918993 has 4 divisors (see below), whose sum is σ = 108120420. Its totient is φ = 105717568.

The previous prime is 106918991. The next prime is 106918997. The reversal of 106918993 is 399819601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75916369 + 31002624 = 8713^2 + 5568^2 .

It is a cyclic number.

It is not a de Polignac number, because 106918993 - 2¹ = 106918991 is a prime.

It is a super-2 number, since 2×106918993² = 22863342128268098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106918991) 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, 600580 + ... + 600757.

It is an arithmetic number, because the mean of its divisors is an integer number (27030105).

Almost surely, 2^106918993 is an apocalyptic number.

It is an amenable number.

106918993 is a deficient number, since it is larger than the sum of its proper divisors (1201427).

106918993 is an equidigital number, since it uses as much as digits as its factorization.

106918993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201426.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 106918993 is about 10340.1640702650. The cubic root of 106918993 is about 474.6261035484.

The spelling of 106918993 in words is "one hundred six million, nine hundred eighteen thousand, nine hundred ninety-three".