72115207 has 8 divisors (see below), whose sum is σ = 78820992. Its totient is φ = 65683200.

The previous prime is 72115193. The next prime is 72115259. The reversal of 72115207 is 70251127.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72115207 - 2⁷ = 72115079 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 (72115607) 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, 67894 + ... + 68947.

It is an arithmetic number, because the mean of its divisors is an integer number (9852624).

Almost surely, 2^72115207 is an apocalyptic number.

72115207 is a deficient number, since it is larger than the sum of its proper divisors (6705785).

72115207 is a wasteful number, since it uses less digits than its factorization.

72115207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136889.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 72115207 is about 8492.0672983673. The cubic root of 72115207 is about 416.2385354573.

The spelling of 72115207 in words is "seventy-two million, one hundred fifteen thousand, two hundred seven".