73215743 has 2 divisors, whose sum is σ = 73215744. Its totient is φ = 73215742.

The previous prime is 73215679. The next prime is 73215763. The reversal of 73215743 is 34751237.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73215743 - 2⁶ = 73215679 is a prime.

It is a super-3 number, since 3×73215743³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73215763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36607871 + 36607872.

It is an arithmetic number, because the mean of its divisors is an integer number (36607872).

Almost surely, 2^73215743 is an apocalyptic number.

73215743 is a deficient number, since it is larger than the sum of its proper divisors (1).

73215743 is an equidigital number, since it uses as much as digits as its factorization.

73215743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 73215743 is about 8556.6198349582. The cubic root of 73215743 is about 418.3452330529.

The spelling of 73215743 in words is "seventy-three million, two hundred fifteen thousand, seven hundred forty-three".