74428633 has 2 divisors, whose sum is σ = 74428634. Its totient is φ = 74428632.

The previous prime is 74428619. The next prime is 74428637. The reversal of 74428633 is 33682447.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59474944 + 14953689 = 7712^2 + 3867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74428633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74428592 and 74428601.

It is not a weakly prime, because it can be changed into another prime (74428637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37214316 + 37214317.

It is an arithmetic number, because the mean of its divisors is an integer number (37214317).

Almost surely, 2^74428633 is an apocalyptic number.

It is an amenable number.

74428633 is a deficient number, since it is larger than the sum of its proper divisors (1).

74428633 is an equidigital number, since it uses as much as digits as its factorization.

74428633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 37.

The square root of 74428633 is about 8627.2030809527. The cubic root of 74428633 is about 420.6426913997.

The spelling of 74428633 in words is "seventy-four million, four hundred twenty-eight thousand, six hundred thirty-three".