106721701 has 4 divisors (see below), whose sum is σ = 108735372. Its totient is φ = 104708032.

The previous prime is 106721683. The next prime is 106721707. The reversal of 106721701 is 107127601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 107127601 = 7 ⋅15303943.

It can be written as a sum of positive squares in 2 ways, for example, as 47969476 + 58752225 = 6926^2 + 7665^2 .

It is a cyclic number.

It is not a de Polignac number, because 106721701 - 2¹¹ = 106719653 is a prime.

It is a super-2 number, since 2×106721701² = 22779042928666802, 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 (106721707) 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, 1006756 + ... + 1006861.

It is an arithmetic number, because the mean of its divisors is an integer number (27183843).

Almost surely, 2^106721701 is an apocalyptic number.

It is an amenable number.

106721701 is a deficient number, since it is larger than the sum of its proper divisors (2013671).

106721701 is an equidigital number, since it uses as much as digits as its factorization.

106721701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013670.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 106721701 is about 10330.6195845167. The cubic root of 106721701 is about 474.3339895969. Note that the first 3 decimals are identical.

The spelling of 106721701 in words is "one hundred six million, seven hundred twenty-one thousand, seven hundred one".