72107279 has 2 divisors, whose sum is σ = 72107280. Its totient is φ = 72107278.

The previous prime is 72107267. The next prime is 72107281. The reversal of 72107279 is 97270127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72107279 - 2¹⁶ = 72041743 is a prime.

It is a Sophie Germain prime.

Together with 72107281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72107219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36053639 + 36053640.

It is an arithmetic number, because the mean of its divisors is an integer number (36053640).

Almost surely, 2^72107279 is an apocalyptic number.

72107279 is a deficient number, since it is larger than the sum of its proper divisors (1).

72107279 is an equidigital number, since it uses as much as digits as its factorization.

72107279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 72107279 is about 8491.6004969617. The cubic root of 72107279 is about 416.2232818088.

The spelling of 72107279 in words is "seventy-two million, one hundred seven thousand, two hundred seventy-nine".