109607961 has 8 divisors (see below), whose sum is σ = 146215744. Its totient is φ = 73036080.

The previous prime is 109607957. The next prime is 109607977. The reversal of 109607961 is 169706901.

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

It is not a de Polignac number, because 109607961 - 2² = 109607957 is a prime.

It is a super-2 number, since 2×109607961² = 24027810229155042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109607921) 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, 781 + ... + 14826.

It is an arithmetic number, because the mean of its divisors is an integer number (18276968).

Almost surely, 2^109607961 is an apocalyptic number.

It is an amenable number.

109607961 is a deficient number, since it is larger than the sum of its proper divisors (36607783).

109607961 is a wasteful number, since it uses less digits than its factorization.

109607961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17951.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 109607961 is about 10469.3820734559. The cubic root of 109607961 is about 478.5720889064.

The spelling of 109607961 in words is "one hundred nine million, six hundred seven thousand, nine hundred sixty-one".