72016667 has 2 divisors, whose sum is σ = 72016668. Its totient is φ = 72016666.

The previous prime is 72016619. The next prime is 72016687. The reversal of 72016667 is 76661027.

It is a strong prime.

It is an emirp because it is prime and its reverse (76661027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72016667 - 2⁶ = 72016603 is a prime.

It is not a weakly prime, because it can be changed into another prime (72016687) 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, 36008333 + 36008334.

It is an arithmetic number, because the mean of its divisors is an integer number (36008334).

Almost surely, 2^72016667 is an apocalyptic number.

72016667 is a deficient number, since it is larger than the sum of its proper divisors (1).

72016667 is an equidigital number, since it uses as much as digits as its factorization.

72016667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 72016667 is about 8486.2634298023. The cubic root of 72016667 is about 416.0488628347.

The spelling of 72016667 in words is "seventy-two million, sixteen thousand, six hundred sixty-seven".