105002661 has 4 divisors (see below), whose sum is σ = 140003552. Its totient is φ = 70001772.

The previous prime is 105002647. The next prime is 105002687. The reversal of 105002661 is 166200501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166200501 = 3 ⋅55400167.

It is not a de Polignac number, because 105002661 - 2¹¹ = 105000613 is a prime.

It is a super-2 number, since 2×105002661² = 22051117634161842, 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 (105002621) 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, 17500441 + ... + 17500446.

It is an arithmetic number, because the mean of its divisors is an integer number (35000888).

Almost surely, 2^105002661 is an apocalyptic number.

It is an amenable number.

105002661 is a deficient number, since it is larger than the sum of its proper divisors (35000891).

105002661 is an equidigital number, since it uses as much as digits as its factorization.

105002661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35000890.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 105002661 is about 10247.0806086417. The cubic root of 105002661 is about 471.7733833261.

The spelling of 105002661 in words is "one hundred five million, two thousand, six hundred sixty-one".