72167099 has 2 divisors, whose sum is σ = 72167100. Its totient is φ = 72167098.

The previous prime is 72167083. The next prime is 72167119. The reversal of 72167099 is 99076127.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72167099 - 2⁴ = 72167083 is a prime.

It is not a weakly prime, because it can be changed into another prime (72167009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36083549 + 36083550.

It is an arithmetic number, because the mean of its divisors is an integer number (36083550).

Almost surely, 2^72167099 is an apocalyptic number.

72167099 is a deficient number, since it is larger than the sum of its proper divisors (1).

72167099 is an equidigital number, since it uses as much as digits as its factorization.

72167099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 72167099 is about 8495.1220709299. The cubic root of 72167099 is about 416.3383492241.

The spelling of 72167099 in words is "seventy-two million, one hundred sixty-seven thousand, ninety-nine".