72108907 has 8 divisors (see below), whose sum is σ = 77761040. Its totient is φ = 66471840.

The previous prime is 72108871. The next prime is 72108913. The reversal of 72108907 is 70980127.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72108907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72108977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7432 + ... + 14122.

It is an arithmetic number, because the mean of its divisors is an integer number (9720130).

Almost surely, 2^72108907 is an apocalyptic number.

72108907 is a deficient number, since it is larger than the sum of its proper divisors (5652133).

72108907 is a wasteful number, since it uses less digits than its factorization.

72108907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 72108907 is about 8491.6963558526. The cubic root of 72108907 is about 416.2264142083.

The spelling of 72108907 in words is "seventy-two million, one hundred eight thousand, nine hundred seven".