72000001 has 8 divisors (see below), whose sum is σ = 73611360. Its totient is φ = 70401792.

The previous prime is 71999999. The next prime is 72000007. The reversal of 72000001 is 10000027.

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 72000001 - 2¹ = 71999999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72000007) 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, 8226 + ... + 14548.

It is an arithmetic number, because the mean of its divisors is an integer number (9201420).

Almost surely, 2^72000001 is an apocalyptic number.

It is an amenable number.

72000001 is a deficient number, since it is larger than the sum of its proper divisors (1611359).

72000001 is a wasteful number, since it uses less digits than its factorization.

72000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 72000001 is about 8485.2814331641. The cubic root of 72000001 is about 416.0167665364.

Adding to 72000001 its reverse (10000027), we get a palindrome (82000028).

The spelling of 72000001 in words is "seventy-two million, one", and thus it is an aban number and an uban number.