74280733 has 2 divisors, whose sum is σ = 74280734. Its totient is φ = 74280732.

The previous prime is 74280707. The next prime is 74280763. The reversal of 74280733 is 33708247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67864644 + 6416089 = 8238^2 + 2533^2 .

It is an emirp because it is prime and its reverse (33708247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74280733 - 2¹⁷ = 74149661 is a prime.

It is equal to p_4354639 and since 74280733 and 4354639 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 (74280763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37140366 + 37140367.

It is an arithmetic number, because the mean of its divisors is an integer number (37140367).

Almost surely, 2^74280733 is an apocalyptic number.

It is an amenable number.

74280733 is a deficient number, since it is larger than the sum of its proper divisors (1).

74280733 is an equidigital number, since it uses as much as digits as its factorization.

74280733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 74280733 is about 8618.6270948452. The cubic root of 74280733 is about 420.3638815486.

The spelling of 74280733 in words is "seventy-four million, two hundred eighty thousand, seven hundred thirty-three".