72216701 has 8 divisors (see below), whose sum is σ = 78470400. Its totient is φ = 66208320.

The previous prime is 72216691. The next prime is 72216707. The reversal of 72216701 is 10761227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72216701 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 (72216707) 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, 60716 + ... + 61893.

It is an arithmetic number, because the mean of its divisors is an integer number (9808800).

Almost surely, 2^72216701 is an apocalyptic number.

It is an amenable number.

72216701 is a deficient number, since it is larger than the sum of its proper divisors (6253699).

72216701 is a wasteful number, since it uses less digits than its factorization.

72216701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122659.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 72216701 is about 8498.0410095504. The cubic root of 72216701 is about 416.4337134808.

Adding to 72216701 its reverse (10761227), we get a palindrome (82977928).

The spelling of 72216701 in words is "seventy-two million, two hundred sixteen thousand, seven hundred one".