73378573 has 2 divisors, whose sum is σ = 73378574. Its totient is φ = 73378572.

The previous prime is 73378559. The next prime is 73378603. The reversal of 73378573 is 37587337.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 2111209 = 8442^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 73378573 - 2⁵ = 73378541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73378673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36689286 + 36689287.

It is an arithmetic number, because the mean of its divisors is an integer number (36689287).

Almost surely, 2^73378573 is an apocalyptic number.

It is an amenable number.

73378573 is a deficient number, since it is larger than the sum of its proper divisors (1).

73378573 is an equidigital number, since it uses as much as digits as its factorization.

73378573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 43.

The square root of 73378573 is about 8566.1294059803. The cubic root of 73378573 is about 418.6551332436.

The spelling of 73378573 in words is "seventy-three million, three hundred seventy-eight thousand, five hundred seventy-three".