72767287 has 2 divisors, whose sum is σ = 72767288. Its totient is φ = 72767286.

The previous prime is 72767281. The next prime is 72767329. The reversal of 72767287 is 78276727.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72767287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72767281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36383643 + 36383644.

It is an arithmetic number, because the mean of its divisors is an integer number (36383644).

Almost surely, 2^72767287 is an apocalyptic number.

72767287 is a deficient number, since it is larger than the sum of its proper divisors (1).

72767287 is an equidigital number, since it uses as much as digits as its factorization.

72767287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460992, while the sum is 46.

The square root of 72767287 is about 8530.3743763096. The cubic root of 72767287 is about 417.4893434358.

The spelling of 72767287 in words is "seventy-two million, seven hundred sixty-seven thousand, two hundred eighty-seven".