109674945 has 32 divisors (see below), whose sum is σ = 195782400. Its totient is φ = 58252032.

The previous prime is 109674941. The next prime is 109674979. The reversal of 109674945 is 549476901.

It is not a de Polignac number, because 109674945 - 2² = 109674941 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 109674945.

It is not an unprimeable number, because it can be changed into a prime (109674941) 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, 33961 + ... + 37049.

It is an arithmetic number, because the mean of its divisors is an integer number (6118200).

Almost surely, 2^109674945 is an apocalyptic number.

109674945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109674945 is a deficient number, since it is larger than the sum of its proper divisors (86107455).

109674945 is a wasteful number, since it uses less digits than its factorization.

109674945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 109674945 is about 10472.5806275244. The cubic root of 109674945 is about 478.6695579361.

The spelling of 109674945 in words is "one hundred nine million, six hundred seventy-four thousand, nine hundred forty-five".