74220361 has 2 divisors, whose sum is σ = 74220362. Its totient is φ = 74220360.

The previous prime is 74220353. The next prime is 74220371. The reversal of 74220361 is 16302247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71723961 + 2496400 = 8469^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 74220361 - 2³ = 74220353 is a prime.

It is not a weakly prime, because it can be changed into another prime (74220371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37110180 + 37110181.

It is an arithmetic number, because the mean of its divisors is an integer number (37110181).

Almost surely, 2^74220361 is an apocalyptic number.

It is an amenable number.

74220361 is a deficient number, since it is larger than the sum of its proper divisors (1).

74220361 is an equidigital number, since it uses as much as digits as its factorization.

74220361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 74220361 is about 8615.1239689281. The cubic root of 74220361 is about 420.2499664692.

The spelling of 74220361 in words is "seventy-four million, two hundred twenty thousand, three hundred sixty-one".