106721735 has 4 divisors (see below), whose sum is σ = 128066088. Its totient is φ = 85377384.

The previous prime is 106721731. The next prime is 106721753. The reversal of 106721735 is 537127601.

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

It is a cyclic number.

It is not a de Polignac number, because 106721735 - 2² = 106721731 is a prime.

It is a super-2 number, since 2×106721735² = 22779057442820450, 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 (106721731) 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, 10672169 + ... + 10672178.

It is an arithmetic number, because the mean of its divisors is an integer number (32016522).

Almost surely, 2^106721735 is an apocalyptic number.

106721735 is a deficient number, since it is larger than the sum of its proper divisors (21344353).

106721735 is an equidigital number, since it uses as much as digits as its factorization.

106721735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21344352.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 106721735 is about 10330.6212301100. The cubic root of 106721735 is about 474.3340399689.

The spelling of 106721735 in words is "one hundred six million, seven hundred twenty-one thousand, seven hundred thirty-five".