72068747 has 2 divisors, whose sum is σ = 72068748. Its totient is φ = 72068746.

The previous prime is 72068743. The next prime is 72068753. The reversal of 72068747 is 74786027.

It is a weak prime.

It is an emirp because it is prime and its reverse (74786027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72068747 - 2² = 72068743 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72068743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36034373 + 36034374.

It is an arithmetic number, because the mean of its divisors is an integer number (36034374).

Almost surely, 2^72068747 is an apocalyptic number.

72068747 is a deficient number, since it is larger than the sum of its proper divisors (1).

72068747 is an equidigital number, since it uses as much as digits as its factorization.

72068747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 72068747 is about 8489.3313635409. The cubic root of 72068747 is about 416.1491294565.

The spelling of 72068747 in words is "seventy-two million, sixty-eight thousand, seven hundred forty-seven".