109707945 has 8 divisors (see below), whose sum is σ = 175532736. Its totient is φ = 58510896.

The previous prime is 109707937. The next prime is 109707947. The reversal of 109707945 is 549707901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109707945 - 2³ = 109707937 is a prime.

It is a super-2 number, since 2×109707945² = 24071666392246050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109707897 and 109707906.

It is not an unprimeable number, because it can be changed into a prime (109707947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3656917 + ... + 3656946.

It is an arithmetic number, because the mean of its divisors is an integer number (21941592).

Almost surely, 2^109707945 is an apocalyptic number.

109707945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109707945 is a deficient number, since it is larger than the sum of its proper divisors (65824791).

109707945 is an equidigital number, since it uses as much as digits as its factorization.

109707945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7313871.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 109707945 is about 10474.1560519213. The cubic root of 109707945 is about 478.7175619458.

It can be divided in two parts, 10970 and 7945, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 109707945 in words is "one hundred nine million, seven hundred seven thousand, nine hundred forty-five".