73146643 has 2 divisors, whose sum is σ = 73146644. Its totient is φ = 73146642.

The previous prime is 73146589. The next prime is 73146659. The reversal of 73146643 is 34664137.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73146643 - 2⁹ = 73146131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73146599 and 73146608.

It is not a weakly prime, because it can be changed into another prime (73146683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36573321 + 36573322.

It is an arithmetic number, because the mean of its divisors is an integer number (36573322).

Almost surely, 2^73146643 is an apocalyptic number.

73146643 is a deficient number, since it is larger than the sum of its proper divisors (1).

73146643 is an equidigital number, since it uses as much as digits as its factorization.

73146643 is an evil number, because the sum of its binary digits is even.

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

The square root of 73146643 is about 8552.5810724015. The cubic root of 73146643 is about 418.2135821565.

It can be divided in two parts, 731 and 46643, that added together give a palindrome (47374).

The spelling of 73146643 in words is "seventy-three million, one hundred forty-six thousand, six hundred forty-three".