74743505 has 4 divisors (see below), whose sum is σ = 89692212. Its totient is φ = 59794800.

The previous prime is 74743477. The next prime is 74743507. The reversal of 74743505 is 50534747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50534747 = 71 ⋅711757.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 64529089 = 3196^2 + 8033^2 .

It is not a de Polignac number, because 74743505 - 2²⁴ = 57966289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74743507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7474346 + ... + 7474355.

It is an arithmetic number, because the mean of its divisors is an integer number (22423053).

Almost surely, 2^74743505 is an apocalyptic number.

It is an amenable number.

74743505 is a deficient number, since it is larger than the sum of its proper divisors (14948707).

74743505 is a wasteful number, since it uses less digits than its factorization.

74743505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14948706.

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 74743505 is about 8645.4326091874. The cubic root of 74743505 is about 421.2350363183.

The spelling of 74743505 in words is "seventy-four million, seven hundred forty-three thousand, five hundred five".