74908445 has 4 divisors (see below), whose sum is σ = 89890140. Its totient is φ = 59926752.

The previous prime is 74908441. The next prime is 74908487. The reversal of 74908445 is 54480947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54480947 = 563 ⋅96769.

It can be written as a sum of positive squares in 2 ways, for example, as 24810361 + 50098084 = 4981^2 + 7078^2 .

It is a cyclic number.

It is not a de Polignac number, because 74908445 - 2² = 74908441 is a prime.

It is a super-2 number, since 2×74908445² = 11222550264636050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74908441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7490840 + ... + 7490849.

It is an arithmetic number, because the mean of its divisors is an integer number (22472535).

Almost surely, 2^74908445 is an apocalyptic number.

It is an amenable number.

74908445 is a deficient number, since it is larger than the sum of its proper divisors (14981695).

74908445 is a wasteful number, since it uses less digits than its factorization.

74908445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14981694.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 74908445 is about 8654.9664932916. The cubic root of 74908445 is about 421.5446617156.

The spelling of 74908445 in words is "seventy-four million, nine hundred eight thousand, four hundred forty-five".