74628287 has 2 divisors, whose sum is σ = 74628288. Its totient is φ = 74628286.

The previous prime is 74628271. The next prime is 74628311. The reversal of 74628287 is 78282647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74628287 - 2⁴ = 74628271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74628217) 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, 37314143 + 37314144.

It is an arithmetic number, because the mean of its divisors is an integer number (37314144).

Almost surely, 2^74628287 is an apocalyptic number.

74628287 is a deficient number, since it is larger than the sum of its proper divisors (1).

74628287 is an equidigital number, since it uses as much as digits as its factorization.

74628287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 44.

The square root of 74628287 is about 8638.7665207482. The cubic root of 74628287 is about 421.0184787356.

The spelling of 74628287 in words is "seventy-four million, six hundred twenty-eight thousand, two hundred eighty-seven".