74649593 has 2 divisors, whose sum is σ = 74649594. Its totient is φ = 74649592.

The previous prime is 74649587. The next prime is 74649607. The reversal of 74649593 is 39594647.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65334889 + 9314704 = 8083^2 + 3052^2 .

It is an emirp because it is prime and its reverse (39594647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74649593 - 2⁴ = 74649577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74649293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37324796 + 37324797.

It is an arithmetic number, because the mean of its divisors is an integer number (37324797).

Almost surely, 2^74649593 is an apocalyptic number.

It is an amenable number.

74649593 is a deficient number, since it is larger than the sum of its proper divisors (1).

74649593 is an equidigital number, since it uses as much as digits as its factorization.

74649593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 47.

The square root of 74649593 is about 8639.9995949074. Note that the first 3 decimals coincide. The cubic root of 74649593 is about 421.0585411416.

The spelling of 74649593 in words is "seventy-four million, six hundred forty-nine thousand, five hundred ninety-three".