72198067 has 2 divisors, whose sum is σ = 72198068. Its totient is φ = 72198066.

The previous prime is 72198059. The next prime is 72198097. The reversal of 72198067 is 76089127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72198067 - 2³ = 72198059 is a prime.

It is not a weakly prime, because it can be changed into another prime (72198097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36099033 + 36099034.

It is an arithmetic number, because the mean of its divisors is an integer number (36099034).

Almost surely, 2^72198067 is an apocalyptic number.

72198067 is a deficient number, since it is larger than the sum of its proper divisors (1).

72198067 is an equidigital number, since it uses as much as digits as its factorization.

72198067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 72198067 is about 8496.9445684905. The cubic root of 72198067 is about 416.3978930809.

The spelling of 72198067 in words is "seventy-two million, one hundred ninety-eight thousand, sixty-seven".