72005097 has 8 divisors (see below), whose sum is σ = 96062944. Its totient is φ = 47975328.

The previous prime is 72005051. The next prime is 72005099. The reversal of 72005097 is 79050027.

It is a happy number.

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

It is not a de Polignac number, because 72005097 - 2⁷ = 72004969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72005099) 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, 43 + ... + 12000.

It is an arithmetic number, because the mean of its divisors is an integer number (12007868).

Almost surely, 2^72005097 is an apocalyptic number.

It is an amenable number.

72005097 is a deficient number, since it is larger than the sum of its proper divisors (24057847).

72005097 is a wasteful number, since it uses less digits than its factorization.

72005097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14039.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 72005097 is about 8485.5817125286. The cubic root of 72005097 is about 416.0265812188.

The spelling of 72005097 in words is "seventy-two million, five thousand, ninety-seven".