72349723 has 2 divisors, whose sum is σ = 72349724. Its totient is φ = 72349722.

The previous prime is 72349703. The next prime is 72349733. The reversal of 72349723 is 32794327.

It is a strong prime.

It is an emirp because it is prime and its reverse (32794327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72349723 - 2¹⁷ = 72218651 is a prime.

It is not a weakly prime, because it can be changed into another prime (72349703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36174861 + 36174862.

It is an arithmetic number, because the mean of its divisors is an integer number (36174862).

Almost surely, 2^72349723 is an apocalyptic number.

72349723 is a deficient number, since it is larger than the sum of its proper divisors (1).

72349723 is an equidigital number, since it uses as much as digits as its factorization.

72349723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 37.

The square root of 72349723 is about 8505.8640360636. The cubic root of 72349723 is about 416.6892447143.

The spelling of 72349723 in words is "seventy-two million, three hundred forty-nine thousand, seven hundred twenty-three".