72205679 has 16 divisors (see below), whose sum is σ = 91936320. Its totient is φ = 55157760.

The previous prime is 72205673. The next prime is 72205697. The reversal of 72205679 is 97650227.

It is not a de Polignac number, because 72205679 - 2¹² = 72201583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72205673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11042 + ... + 16319.

It is an arithmetic number, because the mean of its divisors is an integer number (5746020).

Almost surely, 2^72205679 is an apocalyptic number.

72205679 is a deficient number, since it is larger than the sum of its proper divisors (19730641).

72205679 is a wasteful number, since it uses less digits than its factorization.

72205679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27410.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 72205679 is about 8497.3924824031. The cubic root of 72205679 is about 416.4125264799.

The spelling of 72205679 in words is "seventy-two million, two hundred five thousand, six hundred seventy-nine".