109761345 has 32 divisors (see below), whose sum is σ = 195661440. Its totient is φ = 58380480.

The previous prime is 109761341. The next prime is 109761371. The reversal of 109761345 is 543167901.

It is not a de Polignac number, because 109761345 - 2² = 109761341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109761341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62175 + ... + 63915.

It is an arithmetic number, because the mean of its divisors is an integer number (6114420).

Almost surely, 2^109761345 is an apocalyptic number.

109761345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109761345 is a deficient number, since it is larger than the sum of its proper divisors (85900095).

109761345 is a wasteful number, since it uses less digits than its factorization.

109761345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 109761345 is about 10476.7048731937. The cubic root of 109761345 is about 478.7952207738.

It can be divided in two parts, 10976 and 1345, that added together give a palindrome (12321).

The spelling of 109761345 in words is "one hundred nine million, seven hundred sixty-one thousand, three hundred forty-five".