74235709 has 2 divisors, whose sum is σ = 74235710. Its totient is φ = 74235708.

The previous prime is 74235643. The next prime is 74235739. The reversal of 74235709 is 90753247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65367225 + 8868484 = 8085^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 74235709 - 2⁹ = 74235197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74235739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37117854 + 37117855.

It is an arithmetic number, because the mean of its divisors is an integer number (37117855).

Almost surely, 2^74235709 is an apocalyptic number.

It is an amenable number.

74235709 is a deficient number, since it is larger than the sum of its proper divisors (1).

74235709 is an equidigital number, since it uses as much as digits as its factorization.

74235709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 74235709 is about 8616.0146819745. The cubic root of 74235709 is about 420.2789322492.

The spelling of 74235709 in words is "seventy-four million, two hundred thirty-five thousand, seven hundred nine".