72207641 has 8 divisors (see below), whose sum is σ = 78871968. Its totient is φ = 65560000.

The previous prime is 72207637. The next prime is 72207647. The reversal of 72207641 is 14670227.

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

It is not a de Polignac number, because 72207641 - 2² = 72207637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72207647) 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, 5966 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (9858996).

Almost surely, 2^72207641 is an apocalyptic number.

It is an amenable number.

72207641 is a deficient number, since it is larger than the sum of its proper divisors (6664327).

72207641 is a wasteful number, since it uses less digits than its factorization.

72207641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 72207641 is about 8497.5079287989. The cubic root of 72207641 is about 416.4162980853.

Adding to 72207641 its reverse (14670227), we get a palindrome (86877868).

The spelling of 72207641 in words is "seventy-two million, two hundred seven thousand, six hundred forty-one".