72872069 has 2 divisors, whose sum is σ = 72872070. Its totient is φ = 72872068.

The previous prime is 72872053. The next prime is 72872089. The reversal of 72872069 is 96027827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64240225 + 8631844 = 8015^2 + 2938^2 .

It is a cyclic number.

It is not a de Polignac number, because 72872069 - 2⁴ = 72872053 is a prime.

It is a super-2 number, since 2×72872069² = 10620676880681522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72872089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36436034 + 36436035.

It is an arithmetic number, because the mean of its divisors is an integer number (36436035).

Almost surely, 2^72872069 is an apocalyptic number.

It is an amenable number.

72872069 is a deficient number, since it is larger than the sum of its proper divisors (1).

72872069 is an equidigital number, since it uses as much as digits as its factorization.

72872069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 72872069 is about 8536.5138669131. The cubic root of 72872069 is about 417.6896366801.

The spelling of 72872069 in words is "seventy-two million, eight hundred seventy-two thousand, sixty-nine".