106729591 has 4 divisors (see below), whose sum is σ = 111370032. Its totient is φ = 102089152.

The previous prime is 106729583. The next prime is 106729603. The reversal of 106729591 is 195927601.

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 106729591 - 2³ = 106729583 is a prime.

It is a super-2 number, since 2×106729591² = 22782411190054562, 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 (106729531) 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, 2320186 + ... + 2320231.

It is an arithmetic number, because the mean of its divisors is an integer number (27842508).

Almost surely, 2^106729591 is an apocalyptic number.

106729591 is a deficient number, since it is larger than the sum of its proper divisors (4640441).

106729591 is an equidigital number, since it uses as much as digits as its factorization.

106729591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640440.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 106729591 is about 10331.0014519407. The cubic root of 106729591 is about 474.3456785752.

The spelling of 106729591 in words is "one hundred six million, seven hundred twenty-nine thousand, five hundred ninety-one".