72108007 has 4 divisors (see below), whose sum is σ = 74594520. Its totient is φ = 69621496.

The previous prime is 72107989. The next prime is 72108073. The reversal of 72108007 is 70080127.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72108007 - 2²³ = 63719399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72103007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243213 + ... + 1243270.

It is an arithmetic number, because the mean of its divisors is an integer number (18648630).

Almost surely, 2^72108007 is an apocalyptic number.

72108007 is a deficient number, since it is larger than the sum of its proper divisors (2486513).

72108007 is a wasteful number, since it uses less digits than its factorization.

72108007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486512.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 72108007 is about 8491.6433627420. The cubic root of 72108007 is about 416.2246825436.

The spelling of 72108007 in words is "seventy-two million, one hundred eight thousand, seven".