73648999 has 2 divisors, whose sum is σ = 73649000. Its totient is φ = 73648998.

The previous prime is 73648987. The next prime is 73649029. The reversal of 73648999 is 99984637.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73648999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73648909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36824499 + 36824500.

It is an arithmetic number, because the mean of its divisors is an integer number (36824500).

Almost surely, 2^73648999 is an apocalyptic number.

73648999 is a deficient number, since it is larger than the sum of its proper divisors (1).

73648999 is an equidigital number, since it uses as much as digits as its factorization.

73648999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 73648999 is about 8581.8994983628. The cubic root of 73648999 is about 419.1688001680.

It can be divided in two parts, 73648 and 999, that added together give a palindrome (74647).

The spelling of 73648999 in words is "seventy-three million, six hundred forty-eight thousand, nine hundred ninety-nine".