74706739 has 2 divisors, whose sum is σ = 74706740. Its totient is φ = 74706738.

The previous prime is 74706719. The next prime is 74706743. The reversal of 74706739 is 93760747.

It is a strong prime.

It is an emirp because it is prime and its reverse (93760747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74706739 - 2¹⁷ = 74575667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74706695 and 74706704.

It is not a weakly prime, because it can be changed into another prime (74706719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37353369 + 37353370.

It is an arithmetic number, because the mean of its divisors is an integer number (37353370).

Almost surely, 2^74706739 is an apocalyptic number.

74706739 is a deficient number, since it is larger than the sum of its proper divisors (1).

74706739 is an equidigital number, since it uses as much as digits as its factorization.

74706739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 43.

The square root of 74706739 is about 8643.3060225819. The cubic root of 74706739 is about 421.1659571058.

The spelling of 74706739 in words is "seventy-four million, seven hundred six thousand, seven hundred thirty-nine".