74431773 has 24 divisors (see below), whose sum is σ = 117692120. Its totient is φ = 45048960.

The previous prime is 74431741. The next prime is 74431787. The reversal of 74431773 is 37713447.

It can be written as a sum of positive squares in 4 ways, for example, as 4173849 + 70257924 = 2043^2 + 8382^2 .

It is not a de Polignac number, because 74431773 - 2⁵ = 74431741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74431673) 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 in 23 ways as a sum of consecutive naturals, for example, 1923 + ... + 12351.

Almost surely, 2^74431773 is an apocalyptic number.

It is an amenable number.

74431773 is a deficient number, since it is larger than the sum of its proper divisors (43260347).

74431773 is a wasteful number, since it uses less digits than its factorization.

74431773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10509 (or 10506 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 74431773 is about 8627.3850615352. The cubic root of 74431773 is about 420.6486066836.

It can be divided in two parts, 7443 and 1773, that added together give a square (9216 = 96²).

The spelling of 74431773 in words is "seventy-four million, four hundred thirty-one thousand, seven hundred seventy-three".