72066847 has 8 divisors (see below), whose sum is σ = 74525312. Its totient is φ = 69616800.

The previous prime is 72066823. The next prime is 72066857. The reversal of 72066847 is 74866027.

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 72066847 - 2⁷ = 72066719 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 (72066857) 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, 18733 + ... + 22249.

It is an arithmetic number, because the mean of its divisors is an integer number (9315664).

Almost surely, 2^72066847 is an apocalyptic number.

72066847 is a deficient number, since it is larger than the sum of its proper divisors (2458465).

72066847 is a wasteful number, since it uses less digits than its factorization.

72066847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 72066847 is about 8489.2194576416. The cubic root of 72066847 is about 416.1454723452.

The spelling of 72066847 in words is "seventy-two million, sixty-six thousand, eight hundred forty-seven".