74642233 has 2 divisors, whose sum is σ = 74642234. Its totient is φ = 74642232.

The previous prime is 74642231. The next prime is 74642299. The reversal of 74642233 is 33224647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 1505529 = 8552^2 + 1227^2 .

It is a cyclic number.

It is not a de Polignac number, because 74642233 - 2¹ = 74642231 is a prime.

Together with 74642231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 74642195 and 74642204.

It is not a weakly prime, because it can be changed into another prime (74642231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37321116 + 37321117.

It is an arithmetic number, because the mean of its divisors is an integer number (37321117).

Almost surely, 2^74642233 is an apocalyptic number.

It is an amenable number.

74642233 is a deficient number, since it is larger than the sum of its proper divisors (1).

74642233 is an equidigital number, since it uses as much as digits as its factorization.

74642233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 31.

The square root of 74642233 is about 8639.5736584626. The cubic root of 74642233 is about 421.0447027419.

The spelling of 74642233 in words is "seventy-four million, six hundred forty-two thousand, two hundred thirty-three".