73803643 has 2 divisors, whose sum is σ = 73803644. Its totient is φ = 73803642.

The previous prime is 73803607. The next prime is 73803661. The reversal of 73803643 is 34630837.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73803643 - 2²¹ = 71706491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73803599 and 73803608.

It is not a weakly prime, because it can be changed into another prime (73803043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36901821 + 36901822.

It is an arithmetic number, because the mean of its divisors is an integer number (36901822).

Almost surely, 2^73803643 is an apocalyptic number.

73803643 is a deficient number, since it is larger than the sum of its proper divisors (1).

73803643 is an equidigital number, since it uses as much as digits as its factorization.

73803643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 73803643 is about 8590.9046671465. The cubic root of 73803643 is about 419.4619773727.

The spelling of 73803643 in words is "seventy-three million, eight hundred three thousand, six hundred forty-three".