806542073 has 4 divisors (see below), whose sum is σ = 808979088. Its totient is φ = 804105060.

The previous prime is 806542069. The next prime is 806542091. The reversal of 806542073 is 370245608.

It is a happy number.

806542073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 806542073 - 2² = 806542069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806542573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218011 + ... + 1218672.

It is an arithmetic number, because the mean of its divisors is an integer number (202244772).

Almost surely, 2^806542073 is an apocalyptic number.

It is an amenable number.

806542073 is a deficient number, since it is larger than the sum of its proper divisors (2437015).

806542073 is a wasteful number, since it uses less digits than its factorization.

806542073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437014.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 806542073 is about 28399.6843820490. The cubic root of 806542073 is about 930.8413679282.

The spelling of 806542073 in words is "eight hundred six million, five hundred forty-two thousand, seventy-three".