72068905 has 8 divisors (see below), whose sum is σ = 87701184. Its totient is φ = 56842800.

The previous prime is 72068897. The next prime is 72068911. The reversal of 72068905 is 50986027.

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

It is not a de Polignac number, because 72068905 - 2³ = 72068897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101151 + ... + 101860.

It is an arithmetic number, because the mean of its divisors is an integer number (10962648).

Almost surely, 2^72068905 is an apocalyptic number.

It is an amenable number.

72068905 is a deficient number, since it is larger than the sum of its proper divisors (15632279).

72068905 is a wasteful number, since it uses less digits than its factorization.

72068905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203087.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 72068905 is about 8489.3406693335. The cubic root of 72068905 is about 416.1494335713.

The spelling of 72068905 in words is "seventy-two million, sixty-eight thousand, nine hundred five".