74789773 has 2 divisors, whose sum is σ = 74789774. Its totient is φ = 74789772.

The previous prime is 74789747. The next prime is 74789777. The reversal of 74789773 is 37798747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41126569 + 33663204 = 6413^2 + 5802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74789773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74789773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74789777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37394886 + 37394887.

It is an arithmetic number, because the mean of its divisors is an integer number (37394887).

Almost surely, 2^74789773 is an apocalyptic number.

It is an amenable number.

74789773 is a deficient number, since it is larger than the sum of its proper divisors (1).

74789773 is an equidigital number, since it uses as much as digits as its factorization.

74789773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2074464, while the sum is 52.

The square root of 74789773 is about 8648.1080589919. The cubic root of 74789773 is about 421.3219365447.

The spelling of 74789773 in words is "seventy-four million, seven hundred eighty-nine thousand, seven hundred seventy-three".