72110069 has 2 divisors, whose sum is σ = 72110070. Its totient is φ = 72110068.

The previous prime is 72110063. The next prime is 72110117. The reversal of 72110069 is 96001127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 19909444 = 7225^2 + 4462^2 .

It is an emirp because it is prime and its reverse (96001127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72110069 - 2⁴ = 72110053 is a prime.

It is a super-2 number, since 2×72110069² = 10399724102369522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72110063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36055034 + 36055035.

It is an arithmetic number, because the mean of its divisors is an integer number (36055035).

Almost surely, 2^72110069 is an apocalyptic number.

It is an amenable number.

72110069 is a deficient number, since it is larger than the sum of its proper divisors (1).

72110069 is an equidigital number, since it uses as much as digits as its factorization.

72110069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 72110069 is about 8491.7647753574. The cubic root of 72110069 is about 416.2286499584.

The spelling of 72110069 in words is "seventy-two million, one hundred ten thousand, sixty-nine".