74695729 has 2 divisors, whose sum is σ = 74695730. Its totient is φ = 74695728.

The previous prime is 74695679. The next prime is 74695759. The reversal of 74695729 is 92759647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47238129 + 27457600 = 6873^2 + 5240^2 .

It is an emirp because it is prime and its reverse (92759647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74695729 - 2⁹ = 74695217 is a prime.

It is not a weakly prime, because it can be changed into another prime (74695759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37347864 + 37347865.

It is an arithmetic number, because the mean of its divisors is an integer number (37347865).

Almost surely, 2^74695729 is an apocalyptic number.

It is an amenable number.

74695729 is a deficient number, since it is larger than the sum of its proper divisors (1).

74695729 is an equidigital number, since it uses as much as digits as its factorization.

74695729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 49.

The square root of 74695729 is about 8642.6690900439. The cubic root of 74695729 is about 421.1452661344.

The spelling of 74695729 in words is "seventy-four million, six hundred ninety-five thousand, seven hundred twenty-nine".