74321087 has 2 divisors, whose sum is σ = 74321088. Its totient is φ = 74321086.

The previous prime is 74321083. The next prime is 74321089. The reversal of 74321087 is 78012347.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74321087 - 2² = 74321083 is a prime.

Together with 74321089, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_4356860 and since 74321087 and 4356860 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74321083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37160543 + 37160544.

It is an arithmetic number, because the mean of its divisors is an integer number (37160544).

Almost surely, 2^74321087 is an apocalyptic number.

74321087 is a deficient number, since it is larger than the sum of its proper divisors (1).

74321087 is an equidigital number, since it uses as much as digits as its factorization.

74321087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 74321087 is about 8620.9678690968. The cubic root of 74321087 is about 420.4399905316.

The spelling of 74321087 in words is "seventy-four million, three hundred twenty-one thousand, eighty-seven".