73720799 has 2 divisors, whose sum is σ = 73720800. Its totient is φ = 73720798.

The previous prime is 73720793. The next prime is 73720811. The reversal of 73720799 is 99702737.

It is a weak prime.

It is an emirp because it is prime and its reverse (99702737) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73720799 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73720793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36860399 + 36860400.

It is an arithmetic number, because the mean of its divisors is an integer number (36860400).

Almost surely, 2^73720799 is an apocalyptic number.

73720799 is a deficient number, since it is larger than the sum of its proper divisors (1).

73720799 is an equidigital number, since it uses as much as digits as its factorization.

73720799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 166698, while the sum is 44.

The square root of 73720799 is about 8586.0817023832. The cubic root of 73720799 is about 419.3049710384.

The spelling of 73720799 in words is "seventy-three million, seven hundred twenty thousand, seven hundred ninety-nine".