74709161 has 2 divisors, whose sum is σ = 74709162. Its totient is φ = 74709160.

The previous prime is 74709143. The next prime is 74709211. The reversal of 74709161 is 16190747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59059225 + 15649936 = 7685^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 74709161 - 2⁶ = 74709097 is a prime.

It is not a weakly prime, because it can be changed into another prime (74709961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37354580 + 37354581.

It is an arithmetic number, because the mean of its divisors is an integer number (37354581).

Almost surely, 2^74709161 is an apocalyptic number.

It is an amenable number.

74709161 is a deficient number, since it is larger than the sum of its proper divisors (1).

74709161 is an equidigital number, since it uses as much as digits as its factorization.

74709161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 74709161 is about 8643.4461298720. The cubic root of 74709161 is about 421.1705084709.

The spelling of 74709161 in words is "seventy-four million, seven hundred nine thousand, one hundred sixty-one".