74955487 has 2 divisors, whose sum is σ = 74955488. Its totient is φ = 74955486.

The previous prime is 74955473. The next prime is 74955509. The reversal of 74955487 is 78455947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74955487 - 2²³ = 66566879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74955487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74955887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37477743 + 37477744.

It is an arithmetic number, because the mean of its divisors is an integer number (37477744).

Almost surely, 2^74955487 is an apocalyptic number.

74955487 is a deficient number, since it is larger than the sum of its proper divisors (1).

74955487 is an equidigital number, since it uses as much as digits as its factorization.

74955487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 49.

The square root of 74955487 is about 8657.6836971560. The cubic root of 74955487 is about 421.6328856550.

The spelling of 74955487 in words is "seventy-four million, nine hundred fifty-five thousand, four hundred eighty-seven".