74606143 has 2 divisors, whose sum is σ = 74606144. Its totient is φ = 74606142.

The previous prime is 74606137. The next prime is 74606153. The reversal of 74606143 is 34160647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74606143 - 2⁹ = 74605631 is a prime.

It is equal to p_4372591 and since 74606143 and 4372591 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74606113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37303071 + 37303072.

It is an arithmetic number, because the mean of its divisors is an integer number (37303072).

Almost surely, 2^74606143 is an apocalyptic number.

74606143 is a deficient number, since it is larger than the sum of its proper divisors (1).

74606143 is an equidigital number, since it uses as much as digits as its factorization.

74606143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 74606143 is about 8637.4847612022. The cubic root of 74606143 is about 420.9768325277.

The spelling of 74606143 in words is "seventy-four million, six hundred six thousand, one hundred forty-three".