72267667 has 2 divisors, whose sum is σ = 72267668. Its totient is φ = 72267666.

The previous prime is 72267641. The next prime is 72267683. The reversal of 72267667 is 76676227.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72267667 is a prime.

It is not a weakly prime, because it can be changed into another prime (72267467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36133833 + 36133834.

It is an arithmetic number, because the mean of its divisors is an integer number (36133834).

Almost surely, 2^72267667 is an apocalyptic number.

72267667 is a deficient number, since it is larger than the sum of its proper divisors (1).

72267667 is an equidigital number, since it uses as much as digits as its factorization.

72267667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 43.

The square root of 72267667 is about 8501.0391717719. The cubic root of 72267667 is about 416.5316546747.

The spelling of 72267667 in words is "seventy-two million, two hundred sixty-seven thousand, six hundred sixty-seven".