74394653 has 2 divisors, whose sum is σ = 74394654. Its totient is φ = 74394652.

The previous prime is 74394631. The next prime is 74394689. The reversal of 74394653 is 35649347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72812089 + 1582564 = 8533^2 + 1258^2 .

It is an emirp because it is prime and its reverse (35649347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74394653 - 2¹² = 74390557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74394653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74394613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37197326 + 37197327.

It is an arithmetic number, because the mean of its divisors is an integer number (37197327).

Almost surely, 2^74394653 is an apocalyptic number.

It is an amenable number.

74394653 is a deficient number, since it is larger than the sum of its proper divisors (1).

74394653 is an equidigital number, since it uses as much as digits as its factorization.

74394653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 74394653 is about 8625.2335040856. The cubic root of 74394653 is about 420.5786675878.

The spelling of 74394653 in words is "seventy-four million, three hundred ninety-four thousand, six hundred fifty-three".