106724861 has 4 divisors (see below), whose sum is σ = 113002812. Its totient is φ = 100446912.

The previous prime is 106724833. The next prime is 106724939. The reversal of 106724861 is 168427601.

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 88924900 + 17799961 = 9430^2 + 4219^2 .

It is a cyclic number.

It is not a de Polignac number, because 106724861 - 2⁶ = 106724797 is a prime.

It is a super-2 number, since 2×106724861² = 22780391910938642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106724161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3138950 + ... + 3138983.

It is an arithmetic number, because the mean of its divisors is an integer number (28250703).

Almost surely, 2^106724861 is an apocalyptic number.

It is an amenable number.

106724861 is a deficient number, since it is larger than the sum of its proper divisors (6277951).

106724861 is an equidigital number, since it uses as much as digits as its factorization.

106724861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6277950.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 106724861 is about 10330.7725267765. The cubic root of 106724861 is about 474.3386711833.

The spelling of 106724861 in words is "one hundred six million, seven hundred twenty-four thousand, eight hundred sixty-one".